Hyphens & Dashes: Hyphen Rules, Compound Adjectives, En Dash & Em Dash

For beginners · ages 5–8

What a hyphen does

A hyphen is a short line that joins words so they work as one.

Read the right-hand words aloud and you will hear it: each joined word is said as one name.

This is the first step of the chapter's Join or Break Test: are the words joining to make one word? Then a hyphen, short and with no spaces.

A hyphen can join two words, three words or even more.

Count them. The number of hyphens is always one less than the number of words. Two words need one hyphen. Three words need two. Four words need three.

Every hyphen matters. "mother-in law" has lost its second hyphen, so the word snaps in the middle. "merrygoround" has lost both, and the three words are squashed into a jumble that is hard to read.

So there are two ways to write the same small words side by side:

Joined: the words make one thing, so hyphens hold them tight: my mother-in-law, the jack-in-the-box.
Loose: each word does its own job, so spaces keep them apart: my mother is in the garden, the toy is in the box.

Picture beads on a string. Each word is a bead, and a hyphen is the string pulled tight between two beads, with no gap. Thread mother, in and law on one string and you are holding one necklace: mother-in-law. Leave a gap in the string and the beads roll away one by one.

A word made by joining other words is called a compound. Some compounds join with a hyphen (mother-in-law), some close up into one word with nothing between (football, sunflower), and some stay as two words with a space (bus stop). In the next sections you will meet the compounds that take a hyphen: numbers like twenty-one, words like T-shirt, ages like a seven-year-old, and describing pairs like a long-tailed monkey. You do not need the word compound yet.

Here is a hard one, and it is fine to find it hard. Not every joined word uses a hyphen. football: two words, foot and ball, closed up into one with nothing between them. sunflower: sun and flower, closed up too. merry-go-round: three words, held together by hyphens. bus stop: two words that stay apart, with a space. So how do you know which is which? Mostly, you learn each word as you meet it, and when you are not sure, you look it up in a dictionary. Dictionaries do not always agree: one prints ice cream and another prints ice-cream, and both are fine. What never changes is the hyphen's job. When a hyphen is there, it is joining words into one, and it sits tight against them. It never floats with spaces round it in the middle of a word.

Did you know the word hyphen is very old? It comes from Greek words meaning "under one". Long ago, Greek teachers of reading drew a small curved mark under two words to show that they should be read together, as one. Over the centuries the mark moved up to the middle of the line and became a short straight stroke. But it still does the same job it did all that time ago: it tells the reader, these words are one. So every time you write mother-in-law, you are using a mark that readers have trusted for a very long time, to do exactly the same thing.

A hyphen only joins when it is tight. With spaces round it, the line stops joining. Some joined words close up with no hyphen at all (football), and some stay apart (bus stop). A dictionary tells you which, and dictionaries sometimes differ. In a printed book you may see a hyphen at the very end of a line, where a long word has been split. That is a different job, and you will meet it in section 9. There is also a longer line called a dash, which breaks a sentence open instead of joining words. You will meet it in section 6.

1. Ask of any little line: is it joining words into one?
2. Write a hyphen short and tight, with no space before or after it.
3. Join every word in the group: mother-in-law has two hyphens, not one.
4. Count the hyphens: one less than the number of words.
5. Keep words loose when each does its own job: my mother is in the garden.
6. Say the joined word aloud: if it sounds like one name, it is one word.
7. Check a dictionary when you are not sure whether a word takes a hyphen, closes up or stays apart.
8. Never squash the words together with no hyphen at all: write merry-go-round, not merrygoround.

• My mother-in-law makes the best dosas.
• Aarav rode the merry-go-round three times.
• Nani planted forget-me-nots by the gate.
• Tom wound up the jack-in-the-box and waited.
• Grace poured an ice-cold glass of water.
• Kenji's sister-in-law lives in Osaka.

• Diya's brother-in-law is a pilot.
• Rohan's team won the tug-of-war.
• My mother is in the garden with Dadi.
• Ella played hide-and-seek in the woods.
• The walkie-talkie crackled in Oliver's hand.
• Amara won a yo-yo at the fair in Lagos.

Number words from twenty-one to ninety-nine

A number from twenty-one to ninety-nine is made of two parts: a tens word and a ones word. A hyphen joins them.

This is the Join or Break Test at work: a tens word and a ones word are joining to make one number, so a hyphen joins them.

Here is one whole row of the tens, so you can see the pattern.

The tens word on its own never has a hyphen. As soon as a ones word follows it, the hyphen comes in.

Order words join the same way. You come twenty-first in a race, or it is the thirty-first of March. The tens word and the ones word are still one idea, so they are still joined.

In big numbers, look for the tens and ones at the end. Three hundred and fifty-two: only fifty-two is joined. Two thousand and twenty-four: only twenty-four is joined.

So there are two kinds of number word:

Two parts join with a hyphen: twenty-one, sixty-eight, ninety-nine.
One part stands alone: ten, twelve, twenty, fifty, hundred.

Picture a row of train carriages. Each tens word, like twenty or forty, is an engine. Each ones word, from one to nine, is a small carriage. Whenever a carriage stands behind an engine, a hyphen couples them: twenty-one, forty-five. An engine with no carriage behind it, like twenty or forty, runs alone.

Numbers that count, like twenty-one, are called cardinal numbers, and numbers that give an order, like twenty-first, are called ordinal numbers. Both join their tens and ones with a hyphen. In Practice you will meet fractions in words, such as a two-thirds majority, where the hyphen does a similar job. You do not need the long names yet.

Here is a hard one, and it is fine to find it hard. Some big numbers have no hyphen at all, and some have one. 101: one hundred and one. After hundred there is only a ones word. Nothing to join. 110: one hundred and ten. Ten is one word. Nothing to join. 115: one hundred and fifteen. Fifteen is one word. Nothing to join. 121: one hundred and twenty-one. Now there is a tens word and a ones word, so they join. So do not look at how big the number is. Look at the last two digits. If they make a number from twenty-one to ninety-nine that does not end in zero, those two parts join with a hyphen. If they make a number like one, ten, fifteen or forty, nothing is joined. Try 250: two hundred and fifty. No hyphen. Try 257: two hundred and fifty-seven. One hyphen.

Did you know that not every language builds its numbers the way English does? In Hindi, almost every number from one to a hundred has its very own word. Twenty-one is ikkees, and ninety-nine is ninyanve. There are no two parts to join, so there is nothing for a hyphen to do. German builds its numbers from parts, but says the ones first and writes the whole number as one word: 21 is einundzwanzig, which means "one and twenty". English builds twenty-one from two words in the order tens then ones, and the hyphen is the glue that shows they are one number.

Only numbers that have a tens word and a ones word take this hyphen. Twenty, fifteen, a hundred and a thousand have nothing to join. In British and Indian English, people say and after hundred: one hundred and twenty-six. In American English, the and is often left out: one hundred twenty-six. Both are fine, and in both only twenty-six is joined. In everyday writing, big numbers are usually written in figures (126). Words are for stories, cheques, invitations and when a task asks for them. Fractions such as two-thirds also use hyphens; you will meet them in Practice.

1. Ask of every number in words: does it have a tens part and a ones part?
2. Join the two parts with a tight hyphen: twenty-one, ninety-nine.
3. Leave one-part numbers alone: twenty, fifteen, fifty, hundred.
4. In a big number, join only the tens and ones at the end: one hundred and twenty-six.
5. Never put a hyphen into hundred or thousand: one hundred, not one-hundred.
6. Join order words the same way: twenty-first, thirty-second.
7. Check the last two digits to decide: 257 needs a hyphen, 250 does not.
8. Read the number aloud and listen for a tens word followed by a ones word.

• There are twenty-one children in my class.
• Dadi turned seventy-five in June.
• The book has one hundred and twenty-six pages.
• Our team scored forty runs.
• Lily won ninety-nine marbles at the fair.
• Pablo read thirty-two books this year.

• Rani came twenty-first in the race.
• The temple has one hundred and eight steps.
• Kabir counted two hundred and fifty-seven stars.
• The shop sold sixty-eight cakes on Monday.
• Our street has fifteen houses.
• Yuki folded eighty-four paper cranes.

Words that wear a hyphen

Some words always wear a hyphen. You learn them with the hyphen in place, like any spelling.

This is the Join or Break Test again: the parts are joining to make one word, so a hyphen holds them.

Many of these words join a single letter to a word. The letter usually tells you a shape.

The letter keeps its capital, and the hyphen sits tight between the letter and the word.

The great words work in a line down the family. Your grandmother's mother is your great-grandmother. Her mother is your great-great-grandmother, with two hyphens. Each great adds one more hyphen.

So there are two families of words in this section:

Closed words: grandmother, football, sunflower: written as one, with nothing in between.
Hyphen words: great-grandmother, T-shirt, U-turn: joined, with a hyphen every time.

Picture a row of pegs by the classroom door, each with a coat on it. Every peg holds one word: T-shirt, U-turn, yo-yo, great-grandmother. The hyphen is the coat. These words never leave the peg without it, so whenever you take one down to use in a sentence, the hyphen comes too.

Words like T-shirt and great-grandmother are compound nouns: naming words made of more than one part. Dictionaries show which compounds wear a hyphen, which close up and which stay open. In Practice you will meet prefixes, like ex- and self-, that also keep a hyphen in most styles. You do not need the long names yet.

Here is a hard one, and it is fine to find it hard. Not every dictionary prints every word the same way. X-ray: many dictionaries print it with a capital X. x-ray: some print it with a small x. Both are fine. What every dictionary agrees on is the hyphen: X-ray or x-ray, never Xray and never X ray. So when you meet a word that is printed in two ways, pick one and keep it the same all the way through your writing. A careful writer does not use X-ray in one line and x-ray in the next. The same goes for T-shirt. You may also see it spelt tee shirt, and that is fine too. But when the letter T is used, it wears a capital and a hyphen: T-shirt.

Did you know that the X in X-ray means "unknown"? When a scientist called Wilhelm Roentgen found these rays in 1895, he did not know what they were. In maths, X is often used for something unknown, so he named them after it: X-rays. The name stuck, even after scientists learnt all about the rays. So every X-ray at the hospital still carries a letter that once meant "we do not know yet", joined to its word with a hyphen. The letters in T-shirt, U-turn and V-neck are simpler: they are pictures of a shape. Draw each letter in the air and you can see the shirt, the turn and the neck.

Some words are printed in more than one way by different dictionaries: X-ray and x-ray, T-shirt and tee shirt. Both are fine; pick one and keep it. Grandmother, grandfather and grandchild close up with no hyphen. Only great joins on with a hyphen: great-grandmother. The letter in a word like T-shirt or U-turn keeps its capital, even in the middle of a sentence. When you are not sure whether a word wears a hyphen, a dictionary will tell you.

1. Learn these words with the hyphen in place, like a spelling.
2. Join a shape letter to its word: T-shirt, U-turn, V-neck.
3. Keep the letter's capital: T-shirt, not t-shirt.
4. Join great to a family word: great-grandmother, great-aunt.
5. Add one hyphen for each extra great: great-great-grandfather.
6. Keep grandmother and grandfather closed, with no hyphen.
7. For a word dictionaries print two ways, like X-ray, pick one and keep it.
8. Check a dictionary when you are not sure.

• Ananya wore a yellow T-shirt to the picnic.
• The auto made a U-turn near the market.
• My great-grandmother was born in Amritsar.
• The doctor looked at the X-ray of my arm.
• Harry was runner-up in the spelling contest.
• Ines knitted a V-neck jumper for winter.

• Our great-grandfather planted this mango tree.
• My grandmother sings to us every night.
• Sameer bought a red yo-yo at the mela.
• The shelf is L-shaped to fit the corner.
• Aunt Rosie is my great-aunt, my grandad's sister.
• Mateo took a walkie-talkie camping.

How old? A seven-year-old

An age is joined with hyphens when it works as one word. It stays open when it just tells how old.

This is the Join or Break Test at work: the age is joining to make one describing word, so hyphens hold it; after the verb, the words read clearly apart, so no line at all.

The same pattern works for every age, whether it is days, weeks, months or years.

Look at the left column. Every joined age has two hyphens, and the time word never has an s in the middle: day, week, year. The only s that can appear comes at the very end, when you mean more than one: the nine-year-olds.

Look at the right column. No hyphens at all, and the time word keeps its s when there is more than one: days, weeks, years.

So there are two ways to write every age:

Joined: one describing word or one naming word: a seven-year-old girl, the seven-year-olds.
Open: three ordinary words after the verb: she is seven years old.

Picture a badge pinned on a coat. When the age is a badge on a noun, the words are printed together on one badge: seven-year-old, pinned on girl. When the age comes after is, there is no badge: the words are just said aloud, one after another, to answer the question how old?

When two or more words join to describe a noun, like seven-year-old in a seven-year-old girl, they are called a compound adjective. In Practice you will meet many more: a well-known singer, a five-star hotel, a part-time job. The same idea decides them: joined before the noun, often open after the verb. You do not need the long name yet.

Here is a hard one, and it is fine to find it hard. The same age can be written three ways, and all three are right in their own place. "Kofi is nine years old." After is: open, with years. "Kofi is a nine-year-old pupil." Before the noun pupil: joined, with year. "Kofi is a nine-year-old." As a noun, after a: joined, with year. The third one is the tricky one, because it comes after is, just like the first. But look at the little word a. "A nine-year-old" means "a child who is nine", so the age has become a naming word, and naming words made of joined words keep their hyphens. So the test is not just "after is". Ask: is the age a thing (a nine-year-old, the nine-year-olds) or describing one (a nine-year-old pupil)? Join it. Is it only answering how old? Leave it open.

Did you know that joined words before a noun almost never use a plural s in the middle? You say a ten-rupee note, not a ten-rupees note. You say a five-minute walk, not a five-minutes walk, and a two-litre bottle, not a two-litres bottle. Ages follow the same pattern: a seven-year-old girl, never a seven-years-old girl. So when you join an age, the s drops out of the middle, even though the child is seven whole years old. It is one of the quiet patterns English keeps without anybody teaching it. Listen for it next time someone says a two-hour film or a three-day trip.

An age after is, am or are stays open: she is seven years old. An age that has become a noun keeps its hyphens, even after is: Kofi is a nine-year-old. When the age is joined, the time word loses its s in the middle: a ten-year-old boy. An s can still come at the very end for more than one: the ten-year-olds. The same pattern works for measures before a noun, such as a five-minute walk and a two-litre bottle. You will meet more of these in Practice.

1. Ask where the age sits: before a noun, as a noun, or after is?
2. Before a noun, join it with two hyphens: a seven-year-old girl.
3. As a noun, join it too: the seven-year-olds, our two-year-old.
4. After is, am or are, leave it open: she is seven years old.
5. When joined, write year, month, week or day without an s in the middle.
6. Use both hyphens, never just one: seven-year-old.
7. Watch for the little word a: "a nine-year-old" is a noun and stays joined.
8. Use the same pattern for measures: a five-minute walk.

• Riya has a seven-year-old sister.
• Riya's sister is seven years old.
• The ten-year-olds planted a neem tree.
• Ben has a two-month-old puppy.
• The oak in our park is a hundred years old.
• Kofi fed a three-day-old lamb.

• Arnav is a nine-year-old.
• The kitten is three weeks old.
• Dadi told the five-year-olds a story.
• Chloe rescued a ten-day-old duckling.
• My brother and I are twelve years old.
• Lucia found a hundred-year-old coin.

Two words, one picture

Two describing words that make one picture before a noun are joined with a hyphen.

This is the Join or Break Test: are the words joining to make one describing idea before a noun? Then a hyphen. Do they read clearly apart? Then no line at all.

Many one-picture pairs follow a pattern. The first word tells you something about the second.

In every one of these, the two words together describe the noun. Neither word would do the job alone: a four friend and a legged friend both make no sense.

So there are two ways describing words can stand before a noun:

One picture: the words work together, so a hyphen joins them: a curly-haired puppy.
Two pictures: each word works alone, so they stay apart: a small brown puppy.

Picture two paintbrushes. For a big red ball, one brush paints the ball big and the other paints it red: two separate strokes. For a long-tailed monkey, the brushes are tied together with a short string and paint just one thing: the long tail. The string is the hyphen.

A pair like long-tailed or sugar-free is a compound adjective: two words joined into one describing word. You met one kind already in ages, a seven-year-old girl. In Practice you will meet many more, such as a well-known singer and a part-time job, and you will learn what happens when the pair comes after the verb. You do not need the long name yet.

Here is a hard one, and it is fine to find it hard. Sometimes the same two words can be joined or apart, and the hyphen changes what you mean. "a man-eating shark": joined. The shark eats people. Run for the beach! "a man eating shark": apart. A man is eating some shark, perhaps for dinner. "a sugar-free sweet": joined. The sweet has no sugar in it. "a sugar free sweet": apart. It could be read as a free sweet made of sugar. The hyphen does not change the letters at all. It changes which words the reader holds together, and so it changes the picture. That is why careful writers use the hyphen: they want the reader to see their picture, not a funny one.

Did you know that English lets you make up brand new one-picture pairs whenever you need them? You will not find every pair in a dictionary. A "mango-smeared face" or a "mud-splashed bicycle" are not listed anywhere, but any reader understands them at once. Writers of stories do this all the time, to paint a picture in fewer words: a sharp-toothed crocodile, a sleepy-eyed owl, a rain-soaked kitten. The hyphen is what makes it work. It tells the reader: these two words are one describing idea, so read them together. Try making one of your own about a pet or a friend.

The and check is a quick test, not a perfect one. If you are not sure, ask: does each word describe the noun on its own? This section is about pairs before a noun. After is, many pairs behave differently, and you will learn that in Practice. Some pairs, like red-hot and sugar-free, keep their hyphen everywhere. Only the describing words are joined. The noun itself stays loose: a long-tailed monkey, not a long-tailed-monkey. Colour pairs such as dark blue can be written with or without a hyphen before a noun, so they are not tested here.

1. When two describing words stand before a noun, run the and check.
2. If and still makes sense, keep the words apart: a big red ball.
3. If and makes no sense, join the pair: a long-tailed monkey.
4. Ask whether each word describes the noun on its own.
5. Join only the describing words, never the noun: a sugar-free sweet.
6. Use the hyphen when leaving it out could change the picture: a man-eating shark.
7. Write the hyphen tight, with no spaces.
8. Read the phrase aloud and picture it: one picture or two?

• A long-tailed monkey sat on the temple wall.
• Amma warned us about the red-hot tawa.
• Dadu likes a sugar-free sweet after dinner.
• Oscar threw a big red ball.
• Emily cuddled a curly-haired puppy.
• Nia spotted a sharp-toothed crocodile.

• A three-wheeled auto waited at the gate.
• Tara sipped an ice-cold lassi.
• We adopted a small brown kitten.
• Our four-legged friend loves long walks.
• Jack chose a salt-free snack.
• Aiko painted a blue-eyed cat.

What a dash does

A dash is a longer line that breaks a sentence open to add something.

Take away what the dash adds, and the sentence still makes sense: "We had one visitor." "I found my lost shoe." "The best part came last."

This is the break half of the chapter's Join or Break Test: a hyphen joins, a dash breaks.

Dashes come in two patterns. Both add something, but they sit in different places.

One dash, near the end. The sentence stops for a moment, and the dash points to the last bit: "There was one sweet left in the tin — a ladoo." (em dash) Everything after the dash is the extra part.

A pair of dashes, in the middle. The first dash opens the gap and the second dash closes it: "My cousin Aarav — the tall one — plays football." (em dashes) The words between the two dashes are the extra part. After the second dash, the sentence carries on as if nothing had happened.

Here is a quick check. Cover the extra part with your finger. Does the rest still make a sentence? If it does, the dash was adding something.

Now try the check on a hyphen. Cover -in-law in mother-in-law, and you are left with mother, which is a different word. A hyphen's words cannot be pulled apart. A dash's extra part can be lifted out.

Picture a sentence as a corridor with a small door in the wall. When you reach a dash, the door opens and something extra pops out: Nani, the mangoes, a ladoo. Two dashes are a door that opens and then shuts again, so the corridor carries on. A hyphen is not a door. It is tape holding two words tight together, like twenty-one.

The long line you met in this section has a proper name: the em dash. There is also a middle-sized line called the en dash. Many British books use the en dash, with a space on each side, for exactly the same job of adding something. Both are dashes, and both break a sentence. In Practice you will start writing dashes yourself. For now, one word is enough: dash.

Here is a hard one, and it is fine to find it hard. A pair of dashes and a pair of commas can do almost the same job. "My cousin Aarav, the tall one, plays football." "My cousin Aarav — the tall one — plays football." (em dashes) Both sentences add "the tall one" as an extra detail. So what is the difference? The dashes make the extra part louder. They make the reader pause a little longer and notice it more. Commas are quiet; dashes raise their voice. One dash near the end can also do a job a colon does: "There was only one thing in the box: a key." "There was only one thing in the box — a key." (em dash) Both are fine. The dash feels more like a surprise, as if the writer is holding a breath before the key. So when you meet a dash, ask two questions. What does it add? And how does it make the sentence sound? Writers choose a dash when they want the extra part to stand out. You will learn to make that choice yourself later on.

Did you know that the dash is named after the width of a letter? Long ago, printers built every page from small metal letters. The longest dash was about as wide as a capital M, so printers called it an em dash. A shorter dash was about as wide as a capital N, so it became an en dash. The names stuck, even though most people now type on screens. Here is another surprise. In many French and Spanish novels, a dash at the start of a line shows that someone is speaking, instead of quotation marks. So the same line can mean "someone is talking now" in one language and "here is something extra" in English.

Books print dashes in different ways. Some put a space on each side; some let the dash touch the words; some use the long em dash and some a slightly shorter en dash with spaces. All of these are real dashes. A book chooses one style and keeps it. On phones, many people type a hyphen with a space on each side in place of a dash. That is normal in messages. A dash is strong seasoning: one dash, or one pair, in a sentence is plenty. Not every line is a dash. Twenty-one, T-shirt and mother-in-law have hyphens, and hyphens join.

1. When you see a line, ask first: is it joining words, or breaking the sentence?
2. Remember that a hyphen is short and joins words into one: twenty-one.
3. Remember that a dash is longer and breaks the sentence to add something.
4. Pause a little at a dash when you read aloud.
5. Ask what the dash adds: a name, a surprise or a detail.
6. When there are two dashes, find both before you decide what the extra part is.
7. Cover the extra part and check that the rest is still a sentence.
8. Read a spaced hyphen in a message the same way as a dash.

• We had one visitor — Nani.
• The best part — the mangoes — came last.
• Ravi opened the box and found a surprise — a puppy!
• My grandad — who is eighty — still rides a bike.
• Ellie had only one wish — snow.
• Amara packed one thing for the trip — a torch.

• Meera's favourite fruit — mango — is in season.
• Arjun heard a noise at the window — a monkey!
• Our class trip — a visit to the zoo — is on Friday.
• Grace packed everything — even the toothbrush.
• Oliver's dog — a big, fluffy one — sleeps on the sofa.
• Kenji counted the stars — forty-five of them!

Short line or long line?

A hyphen and a dash look alike, but they do opposite jobs.

A hyphen never has spaces round it inside a word. "Twenty - one" with spaces is not the careful way; write twenty-one.

This is the chapter's Join or Break Test in its simplest form: short line joins, long line breaks.

Why is clue 3, the job, the one to trust? Because the first two clues can fool you.

Length can fool you. In some fonts, and on many phone screens, a hyphen and a dash look nearly the same length. And there is a middle-sized line, the en dash, which is longer than a hyphen but shorter than an em dash.

Spaces can fool you. Many books print the dash with a space on each side. Some print it touching the words, with no spaces at all. And people in a hurry sometimes type a hyphen with a space on each side instead of a dash.

The first three are all doing the dash's job, however they look. The last one is doing the hyphen's job. So the question to ask is always: is this line joining words into one, or breaking the sentence to add something?

In careful writing, like a school story or a book, use a real dash for breaking. In a quick message, a spaced hyphen is normal, and everyone reads it as a dash.

Picture a glue stick and a pair of scissors lying side by side. The glue stick is short and presses two words together until there is no gap: seventy-two, T-shirt. The scissors are long and snip the sentence open so something extra can drop in: the cat, a surprise, a name. Before you name a line, ask: is it gluing or snipping?

The line inside words has one name: the hyphen. The longer line has two sizes. The em dash is the longest. The en dash is middle-sized, and in many British books it is used, with spaces, for the same breaking job. The en dash also has a job of its own: it can mean "to", as in pages 10–25 (en dash). You will meet that job in the next section, and much more of it in Craft.

Here is a hard one, and it is fine to find it hard. Sometimes a hyphen has a space after it but not before it, and it is still a hyphen. "We need two- and three-seater sofas." Here two- is waiting to share the word seater with three. The line is joining, even though a word is missing after it. You will meet this in Practice. "Dadi was so hap- py." Here the line at the end of a line of writing joins the two halves of happy, which did not fit on one line. It is still joining. You will meet this in section 9. So neither length nor spaces decide the question on their own. A line with no spaces is usually a hyphen, and a line with spaces on both sides is usually a dash, but "usually" is not "always". The one question that never fails is the job question. Is the line joining words or parts of a word into one? Hyphen. Is it breaking the sentence to add something? Dash. When a line looks strange, ask what it is doing, not what it looks like.

Did you know that most keyboards have no dash key at all? Look at a laptop keyboard. There is one small line key, next to the zero, and it types a hyphen. The long dashes are hidden. On many phones you find them by pressing and holding the hyphen key until a little menu pops up. Many word processors also turn two hyphens typed in a row into a dash on their own. That is why a hyphen with spaces is so common in messages: it is the line people can reach. Readers understand it because they are asking the job question without noticing.

In a message, a hyphen with a space on each side is a normal stand-in for a dash. Nobody reading a text will be confused. In careful writing, a hyphen inside a word never has spaces round it: twenty-one, not twenty - one. Books print dashes in different styles, spaced or closed up, long or a little shorter. All are correct dashes. A hyphen can have a space after it when it is waiting for a shared word (two- and three-seater) or when a word is split at the end of a line. When the look of a line is unclear, trust its job.

1. Ask what the line is doing before you name it.
2. Joining words into one: call it a hyphen.
3. Breaking the sentence to add something: call it a dash.
4. Write a hyphen inside a word with no spaces: twenty-one, merry-go-round.
5. In careful writing, use a real dash for a break, not a hyphen with spaces.
6. In a quick message, a spaced hyphen for a dash is fine.
7. Read aloud: a hyphen has no pause, a dash has a small one.
8. Do not trust length alone on a small screen.

• Dada turned seventy-two this year.
• I know who ate the laddoos — the cat!
• Anika wore a bright yellow T-shirt.
• Jack's granny — the one in the red hat — waved at us.
• Sophie's great-grandmother is ninety-three.
• Luis scored only one goal — the winner.

• We made a U-turn near the temple.
• Priya found the lost bangle — in the flour tin!
• Our school has twenty-one classrooms.
• The pudding — a big, wobbly jelly — was gone in a minute.
• Harry has a toy X-ray machine.
• Mei heard a sound at night — an owl.

The Join or Break Test

Four questions decide every little line. Ask them in order.

This is the chapter's test. Every section from here on uses it.

Here is the Join or Break Test run on every place in one short story where a line might go.

"My great grandmother is ninety one. For her birthday we read pages 5 to 9 of her favourite book and ate one big treat, a mango cake."

The finished story: "My great-grandmother is ninety-one. For her birthday we read pages 5–9 of her favourite book and ate one big treat — a mango cake."

Notice two things. First, most pairs of words pass straight through to question 4 and need no line at all. Lines are the exception, not the rule. Second, some places have a choice: pages 5 to 9 is just as correct as pages 5–9, and a comma or a colon could have added the mango cake instead of a dash. The test tells you which line fits; it does not force a line where words already work.

Picture four doors in a row, each with a sign: Join, Link, Break, None. Every pair of words walks up to the doors in order. Twenty and one step through Join and come out holding hands as twenty-one. Pages 10 and 25 step through Link. A surprise at the end of a sentence steps through Break. Most pairs, like big and red, walk straight through None with no line at all.

The four questions have grown-up names. Question 1 finds compound words and compound numbers. Question 2 finds ranges and links, marked with an en dash. Question 3 finds asides and final points, marked with a dash. Question 4 finds words that stand on their own. In Practice you will meet harder joins: fractions, describing words before a noun, and prefixes like ex- and self-. The same four questions will decide them.

Here is a hard one, and it is fine to find it hard. The same two words can go through different doors in different sentences. "She is seven years old." Seven years old tells you an age after the verb; the words read clearly apart. Door 4: no line. "She is a seven-year-old girl." Now seven, year and old come before girl and make one describing idea. Door 1: join. "The monkey has a long tail." Long and tail read clearly apart. Door 4: no line. "We saw a long-tailed monkey." Before monkey, long and tailed make one picture. Door 1: join. And look at a line between two numbers: "Twenty-one" joins two number words into one number. Door 1. "Pages 20–21" (en dash) links two different page numbers: 20 to 21. Door 2. So the test is not about the words on their own. It is about what the words are doing in this sentence. Ask: are they becoming one thing, linking two things, making room for something extra, or simply standing side by side? The same letters can get different answers in different sentences.

Did you know that a single hyphen can change what a sentence means? "A man-eating shark" is a shark that eats people. "A man eating shark" is a man having shark for dinner. The words are the same; only the join is different. "Twenty-odd children" means about twenty children. "Twenty odd children" means twenty strange ones. So the Join question is not just about tidiness. Joining the right words tells the reader which words belong together, and that can decide who is eating whom. You will meet many more of these in Craft.

Some joins differ between dictionaries: ice cream or ice-cream, e-mail or email. Both forms are seen; pick one and keep it. The linking line in pages 10–25 is an en dash in careful print. On phones, websites and in handwriting, a hyphen is often used instead (10-25), and that is normal. A dash for a break is printed in more than one style, spaced or closed up, long or a little shorter. All are correct. Question 4 is the most common answer. Most pairs of words need no line at all.

1. Ask the four questions in order: join, link, break, or none?
2. Join two-part numbers with a hyphen: twenty-one to ninety-nine.
3. Join words that make one word or one picture: T-shirt, a red-hot pan.
4. Link two numbers that mean "to" with an en dash, or write the word to.
5. Break a sentence with a dash only to add something.
6. Leave words apart when they read clearly on their own: a big red ball.
7. Never write "from" with a linking line; use "from 5 to 9".
8. After writing, run the test on every line and ask for its reason.

• Nani is sixty-five today.
• Kabir must read pages 10–25 tonight.
• There was one sweet left — a barfi.
• Chloe kicked a big red ball.
• Harry's great-grandad — the one with the medals — came to tea.
• Yuki rode the Tokyo–Osaka train.

• Ammi fried the puris in a red-hot pan.
• Rohan wore a new blue shirt.
• Our class has one pet — a goldfish called Moti.
• Emma read chapters 3–6 in one evening.
• Jack made a U-turn on the bike path.
• Ana has forty-eight crayons.

When a word will not fit

When a word will not fit at the end of a line, you may split it between its beats.

In the examples below, a slash ( / ) shows where one line of writing ends and the next begins.

In the chapter's Join or Break Test, this hyphen is a join: it holds the two halves of one word together across the gap.

A few more tips make your splits easy to read.

Do not leave one letter alone. "a- / way" and "Emm- / a" are hard to read. When a split would leave a single letter on either line, move the whole word down instead.

A word with its own hyphen splits at that hyphen. If mother-in-law will not fit, break it after a hyphen that is already there: "mother- / in-law". Do not add a second hyphen in the middle of a part.

Moving the whole word is always allowed. If you are not sure where the beats are, move the word down. A slightly short line is better than a split that makes the reader stumble.

When you type on a computer or a phone, you rarely need any of this. The screen moves a whole word to the next line by itself. Splitting words between beats is mostly for handwriting, posters, and the narrow columns of newspapers and some books.

Picture each long word as a little train, one carriage for each beat: hap and py, gar and den. When the train reaches the edge of the page, you may unhook it only where two carriages meet, and the hyphen is the hook left hanging on the first carriage. A one-beat word is a single carriage: it cannot be unhooked, so it rolls whole onto the next line.

The beats you clap are called syllables. Every syllable has a vowel sound at its heart. Printers and dictionaries mark the places where each word may be split, and sometimes a dictionary splits a word in a slightly different place from where you clap it. For now, clapping the beats and splitting between them is all you need. In Master you will see that people were splitting words at the ends of lines with a hyphen long before printing began.

Here is a hard one, and it is fine to find it hard. Some words have beats that are hard to hear, or that sound different from how they look. "Rabbit": rab, bit. When two same letters sit in the middle, the split usually goes between them: rab- / bit, but- / ter, sum- / mer. "Tiger": ti, ger. Here the first beat ends with a vowel, so the split comes after it: ti- / ger. If you clap it as tig, er, you are not wrong to hear it that way, but "ti- / ger" is how most dictionaries show it. "Friend", "school" and "jumped" look long, but each has only one beat. Clap them: friend, school, jumped. One clap each, so they are never split. "Banana" has three beats: ba, na, na. You could split it after any beat, "ba- / nana" or "bana- / na", but a split that leaves only two letters on a line is best avoided, so you might simply move it down. When in doubt, move the whole word to the next line. That is never wrong.

Did you know that splitting words at the ends of lines is much older than printing? Long before printing presses, scribes copied books by hand, and they too ran out of room at the edges of the page. In medieval manuscripts you can find small marks at the ends of lines showing that a word carried on below. By the age of print, the little line we now call a hyphen was doing that job in books everywhere. Today most of our splitting is done by computers. Newspapers and some books with narrow columns let software split words between their beats, using long lists of the places where each word may break.

Dictionaries sometimes split a word in a slightly different place from where you clap it. Both are usually fine in handwriting; follow the clap test and you will be close. Moving a whole word to the next line is always allowed, and it is often the tidiest choice. When you type, the screen moves whole words down by itself. You add a line-end hyphen yourself mainly when you write by hand. Names are best kept whole. Splitting a name can make it hard to recognise. This hyphen joins two halves of one word. It is not a dash, and it never has a space before it.

1. Clap the beats before you split a word.
2. Split only between two beats: hap- / py.
3. Put the hyphen at the end of the first line, touching the first part.
4. Do not start the next line with a hyphen.
5. Never split a one-beat word: school, jump, friend.
6. Do not leave a single letter alone on a line.
7. Split a word that already has a hyphen at that hyphen.
8. Keep names whole where you can.
9. When in doubt, move the whole word to the next line.

• Dadi was so hap- / py to see us.
• Rohan looked out of the win- / dow at the rain.
• Meena put the pen- / cil back in the box.
• Tom walked to / school in the rain.
• Lily's rab- / bit hopped away.
• Kofi played football in the gar- / den.

• Aditi fed the mon- / key a banana.
• My sis- / ter plays the tabla.
• We visited my mother- / in-law in Pune.
• Emma spread but- / ter on the toast.
• The bird flew / away over the hill.
• Lucas found a spi- / der in the shed.

First mixed review

Everything in Discover comes back to one question: is this line joining, or breaking?

Every line has a reason from the Join or Break Test, and so does every place where no line belongs.

Here is a short note run through the whole toolbox. The slash ( / ) shows where a handwritten line ended.

"Dear Nani, my ten year old brother is twenty one days late with his thank you letter. He is ten years old, so he should know better! He sends one thing with this note, a drawing of your long tailed cat. It is a very hap / py cat."

Two things to notice. Ten years old and ten-year-old are the same words, but one comes after is and one comes before brother; position decides. And the dash before a drawing is a choice: the comma is not wrong, but the dash makes the drawing stand out as the surprise.

Most words in the note, like dear, late, better and very, needed no line at all. Lines are the exception, not the rule.

Picture a toolbox with three tools: a glue stick labelled Join, a pair of scissors labelled Break, and a pair of clapping hands labelled Line End. A sentence arrives with some gaps and some joins. You look at each place, pick up one tool, and say why: glue for twenty-one, scissors for a surprise, clapping hands for a word that ran out of room.

Everything in Discover has a grown-up name. Words like twenty-one, T-shirt and long-tailed are compound words or compound adjectives. The hyphen at the end of a line marks word division. The dash that adds something marks an aside or a final point. In Practice you will meet harder joins: fractions, a well-known singer against the singer is well known, words ending in -ly, prefixes such as ex- and self-, and dashes you write yourself.

Here is a hard one, and it is fine to find it hard. The same words can need a hyphen in one sentence and none in the next. "My ten-year-old brother." The age comes before brother: join. "My brother is ten years old." The age comes after is: open. "A long-tailed monkey." Before monkey: join. "The monkey's tail is long." Long stands on its own after is: no line. "A thank-you letter." Before letter, thank and you make one picture: join. "Please say thank you." Here thank you is just what you say: no line. So in a mixed sentence, you cannot learn a list of words that always take a hyphen and stop there. Some words do always wear one: T-shirt, U-turn, mother-in-law, twenty-one. But many joins depend on where the words stand. Ask: are these words working as one describing idea before a noun? Then join. Are they standing on their own? Then leave them open.

Did you know that the same little line on your keyboard does four different jobs in this band? It joins a number: twenty-one. It joins a word that always wears it: T-shirt. It joins a describing idea before a noun: a seven-year-old girl. And it hangs at the end of a line when a word runs out of room: hap- / py. On a phone, people even press it into service as a fifth job, standing in for a dash in a quick message. One short line, many jobs, and the Join or Break Test sorts them all.

Some compounds vary between dictionaries: ice cream or ice-cream, x-ray or X-ray. Both are seen; choose one and keep it. A dash is often a choice: a comma or a colon may do the same job more quietly. A spaced hyphen standing in for a dash is normal in messages. In careful writing, a real dash is the better choice. Splitting words at the ends of lines matters mainly in handwriting; typed text wraps whole words. When in doubt, run the Join or Break Test and say your reason aloud.

1. Ask of every line: is it joining, or breaking?
2. Join two-part numbers: twenty-one to ninety-nine.
3. Keep hyphens in words that always wear them: T-shirt, U-turn, great-grandmother.
4. Join an age before a noun: a seven-year-old girl.
5. Leave an age open after is: she is seven years old.
6. Join two words that make one picture before a noun: a long-tailed monkey.
7. Use a dash only to add something: a name, a surprise, a detail.
8. Split a word at a line end only between its beats.
9. Never put spaces round a hyphen inside a word.

• My seven-year-old cousin wore a red T-shirt.
• Dadi is sixty-eight years old.
• We saw one animal at the lake — a long-tailed monkey!
• Our great-grandmother lives near the sea.
• Ben made a U-turn at the end of the road.
• Ines is thirty-one — the oldest in the team.

• Kabir has a two-month-old puppy.
• Our visitor today — Uncle Farhan — brought jalebis.
• Riya was so hap- / py with the gift.
• Grandpa had an X-ray on his arm.
• Sam fell asleep on the two-hour drive to the coast.
• Amani counted ninety-nine steps up the hill.

Building accuracy · ages 8–12

Fractions in words

A fraction in words has two parts: a counting word and a part word. Two thirds. Three quarters. One fifth. When the fraction describes the noun that follows, the two parts join with a hyphen.

Notice the last row. Three-quarters sits after the verb here, but it still describes a word, full, so it stays joined.

This is question one of the Join or Break Test: are the words joining to make one describing idea, a fraction that says what kind? Then a hyphen, short and with no spaces.

Now look at a fraction that is the amount itself. It usually comes before of, and it answers the question how much.

Why the choice? Some dictionaries and publishers hyphenate every fraction in words. Others keep the hyphen only when the fraction describes, and write the amount open. Both habits are careful English, so pick one for a piece of writing and keep it.

One thing is not a choice. When the fraction describes the next word, as in a two-thirds majority or a one-quarter share, every style joins it.

Picture a fraction as a slice of cake on a plate. When you are only counting how much cake is left, the slice can sit loose on the plate: two thirds of the cake. But when the slice is used to describe something else, such as a two-thirds majority, you pick it up and hand it over, so the two parts must be stuck together. A hyphen is the icing that holds the slice in one piece while it travels.

Half behaves like any other fraction. Half alone needs no hyphen: half the class, half an hour. When it describes a noun, it joins: a half-day holiday, a half-hour lesson, half-price tickets. And when a fraction has a two-part number in it, such as twenty-one hundredths, the number keeps its own hyphen from section 2. In the next section, you will see that the same joining move works for every describing pair before a noun, not only for numbers.

Here is the hard case, and it is worth slowing down for: the same two words can be a fraction or a count. Compare these two sentences. The hockey match has four quarters, and India scored in three quarters. The stadium was three-quarters full. In the first, quarters is a plain noun. A hockey match really has four quarters, four separate periods of play, and India scored in three of them. Three is simply counting them. There is no fraction of anything, so there is no hyphen. In the second, three-quarters is a fraction. It describes how full the stadium was: more than half, less than all. The counting word and the part word make one describing idea, so they are joined. The same happens with thirds. 'The film has three parts, and I watched two thirds' can mean two of the three parts, and many writers leave it open. 'A two-thirds share' is a fraction describing the share, so it is joined. So the test is not whether a number and a part word stand side by side. It is whether they make one fraction that describes something. Ask: is this a piece of one whole, used to describe? Then join it.

The word fraction itself is about breaking. It comes from a Latin word meaning to break, the same root as fracture. A fraction is a broken piece of a whole. Indian English has its own everyday fractions that English speakers elsewhere may not know. Sawa means one and a quarter, dedh means one and a half, and dhai means two and a half. A shopkeeper who asks for dedh sau rupees wants one hundred and fifty. And look at the word quarter. It began as a fraction, one fourth, and grew into a place (the Latin Quarter of Paris), a coin (the American quarter) and a period of a game. So when you meet quarters in a sentence, ask which one it is before you reach for a hyphen.

This section covers fractions written in words. Fractions in figures (2/3, 3/4) and decimals never take a hyphen. When a fraction is the amount before of, both two thirds of and two-thirds of are standard; nothing here keys either one wrong, and questions test only keeping one style. Sawa, dedh and dhai are described as Hindi and Urdu words used in Indian English speech, not as items to correct. Ages and measures before a noun, such as a ten-year-old boy, come back in the next section.

1. Join a fraction that describes the next noun: a two-thirds majority, a one-quarter share.
2. Keep the hyphen when the fraction describes a word such as full or empty: three-quarters full.
3. Put the hyphen inside the fraction, between the counting word and the part word.
4. Write every hyphen tight, with no spaces round it.
5. Before of, choose two thirds or two-thirds, then keep the same form in one piece.
6. Leave half alone unjoined; join it only when it describes: a half-day holiday.
7. Do not hyphenate a plain count of pieces: India scored in three quarters of the match.
8. Keep a two-part number's own hyphen inside a fraction: twenty-one hundredths.

• The club chose Ananya by a two-thirds majority.
• Rahul paid for a one-quarter share of the auto.
• By half-time the stadium in Kolkata was three-quarters full.
• Two thirds of the class walked to school.
• Two-thirds of the class walked to school.
• The shop in Nairobi sold half-price shoes all week.

• Nani adds a three-quarter cup of milk to the kheer.
• The school gave us a half-day holiday for Onam.
• One fifth of the money went to the library fund.
• The council needs a two-thirds vote to change the rule.
• By eight o'clock the jug was only one-third full.
• In Lima, Mateo read three quarters of the book on the bus.

Before the noun: a well-known singer

When two or more words make one describing idea before a noun, they join with hyphens. The joined words work as one describing word.

This is question one of the Join or Break Test: are the words joining to make one describing idea before a noun? Then hyphens, short and with no spaces.

Number pairs follow one extra habit. Before a noun, the unit stays singular, even when the number is more than one.

So write a five-star hotel, not a five-stars hotel. The joined pair describes, and describing words in English do not take a plural s.

Longer groups work the same way. Every word in the group joins: a ten-year-old boy, a stay-at-home day, an up-to-date list. Each hyphen holds one more word into the describing idea.

Picture the words before a noun as children waiting at a bus stop. Some stand alone, each holding their own ticket: a big, red bus. Others hold hands because they are going together and one cannot travel without the other: well and known, part and time, five and star. A hyphen is the joined hands. When you see two words that cannot travel alone, join their hands before they reach the noun.

What happens when the same pair comes after the verb, as in the singer is well known? Many of these pairs open up there, while some that the dictionary lists with a hyphen keep it: that is the next section. After that, you will meet the one kind of pair that never takes a hyphen, even before the noun: a pair that starts with an -ly word, such as a quickly written note.

Here is the hard case: telling a describing pair from two separate describing words. Compare these two phrases. a big red bus a bright-red bus In the first, big and red each describe the bus on their own. It is a big bus, and it is a red bus. Each word does its own describing job. So no hyphen. In the second, bright does not describe the bus. The bus is not bright; its red is. Bright describes red, and together they describe the bus. So the two words team up, and many writers join them. The cover test settles most cases. Cover the first word and read: a red bus. Cover the second and read: a big bus. Both work, so the words are separate. Now try a well-known singer: a known singer is odd, and a well singer means something else entirely. Neither half works alone, so they join. Colour pairs such as bright red, dark blue and light green are written both ways by careful writers before a noun, so no question here marks either one wrong. The pairs to key are the ones where one word cannot describe the noun alone: well-known, part-time, five-star.

Some describing pairs are so useful that they grow into nouns of their own. A two-wheeler, the Indian English word for a scooter or motorbike, started as a two-wheeled vehicle. A five-star became a way to praise anything excellent, and a ten-rupee note is often just a ten. Indian English is especially rich in these pairs. An English-medium school, a two-lakh loan, a ten-crore project, a same-day delivery: each packs a whole idea into two or three joined words before the noun. And English keeps making new ones. Every few years a pair becomes common enough, like a work-from-home day, that people start writing it on notices and signs. The hyphen is how a new describing idea announces that its words now belong together.

This section covers describing pairs that come before a noun. After the verb, many of them open up, and styles differ: that is section 13. Pairs beginning with an -ly word never take a hyphen (section 14). Colour pairs such as dark blue or bright red are written open or joined by careful writers, and nothing here keys either form. Indian English pairs such as an English-medium school and a two-lakh loan are standard. Metric spellings follow British and Indian English (metre, kilometre).

1. Join two or more words that make one describing idea before a noun: a well-known singer.
2. Use the cover test: if neither word describes the noun alone, join them.
3. Leave two describing words apart when each works alone: a big red bus.
4. Join every word in a longer group: a ten-year-old boy, an up-to-date list.
5. Keep the unit singular in a number pair: a ten-rupee note, a two-hour film.
6. Keep the noun outside the group: a part-time job, not a part-time-job.
7. Write every hyphen tight, with no spaces round it.
8. Treat Indian English pairs as standard: an English-medium school, a two-lakh loan.

• A well-known singer opened the Durga Puja fair.
• Arjun took a part-time job at the bookshop.
• Our English-medium school has a big red gate.
• Grace ran the 100-metre race in fourteen seconds.
• The ten-year-old boy fed the ducks at the park.
• Yuki stayed in a five-star hotel in Kyoto.

• Dada gave me a ten-rupee note for the fair.
• The bank approved a two-lakh loan for the shop.
• Meena keeps an up-to-date list of birthdays.
• We watched a two-hour film about the sea.
• Nobody expected the last-minute change to the timetable.
• In Cairo, Omar bought a sugar-free sweet for Nana.

After the verb: the singer is well known

A describing pair is joined when it is handed to a noun. After the verb, with no noun following, an age or a measure opens up again.

Notice that the unit becomes plural again once the hyphens go: years, metres, hours.

This is question four of the Join or Break Test: if the words read correctly and clearly apart, no line at all. After the verb, ten years old reads perfectly well apart.

Some pairs are not made up on the spot. They are listed in the dictionary with a hyphen, as one word, and they keep it after the verb too.

How do you tell? Most of these end in -ed or -ing and describe what a person or thing is like: handed, fashioned, looking, minded. If you are unsure, look the word up. If the dictionary prints it with a hyphen, keep the hyphen everywhere.

Well pairs sit in between. This section teaches the common pattern, the singer is well known, and many British writers also keep well-known after the verb. Both are standard; no question here marks well-known wrong unless it names the pattern it is testing.

Picture a describing pair as a parcel tied with string. The string, the hyphen, is there because the parcel is being carried to someone: the noun. Once the parcel is delivered and opened, after the verb, the string comes off and the words lie loose on the table: ten years old. But some things are sold already tied, like a toy in a sealed box. Left-handed and old-fashioned come from the dictionary sealed, and nobody unties them.

Two groups from this chapter keep their hyphens after the verb as well. A fraction that describes a word such as full stays joined (the tank is three-quarters full), as you saw in section 11. And prefixes such as self- and all- keep theirs everywhere (Neha is self-taught), which is section 15. Next, though, comes a pair that never takes a hyphen at all, even before a noun: an -ly word with a describing word, such as a quickly written note.

Here is the hard case, and it is worth slowing down for: a pair that comes after the verb but is still followed by a noun. Compare these two sentences. Ishaan is ten years old. Ishaan is a ten-year-old boy. Both ages come after the verb is. Yet the first has no hyphens and the second has two. So the verb is not what decides. What decides is the noun. In the first sentence, nothing comes after old. The age is not handed to any noun; it simply tells you how old Ishaan is. So it opens up. In the second, the age is followed by the noun boy. It describes the boy, so it is joined, exactly as in the last section. The words the and a are clues: when a or the comes before the pair, a noun is usually on its way. The same test works for the ten-year-olds, where the age has become a noun itself (you met it in Discover). It is still joined, because it is one naming word, not a loose age after the verb. So do not look for the verb. Look after the pair. Is a noun coming, or is the pair itself a noun? Join it. Is nothing coming? Open it, unless the dictionary has sealed it.

Dictionaries disagree more than you might think, and they change their minds. A pair such as well known is printed with a hyphen after the verb in some British dictionaries and open in others, and American books mostly leave it open. Writers are not being careless when they differ; they are following different books. Some dictionary pairs are old. Left-handed has been in English for centuries, and old-fashioned for hundreds of years. Others are new: work-from-home has only become common in recent years, and dictionaries are still deciding how to print it. So when you meet a pair after the verb and are unsure, there is an honest answer: check one good dictionary, follow it, and keep to it for the whole piece of writing.

This section covers pairs after the verb. Ages and measures after the verb open up, and hyphens there are keyed wrong. The singer is well known and the singer is well-known are both standard in British usage; questions key the open form only when the stem names this section's pattern. Part-time and full-time after the verb vary by dictionary (the job is part time / part-time), so they are never keyed. Dictionary-listed pairs such as left-handed and old-fashioned keep their hyphen, and only pairs every major dictionary joins are keyed. Prefix hyphens and describing fractions are covered in their own sections.

1. Open an age after the verb: Ishaan is ten years old.
2. Open a measure after the verb: the rope is ten metres long.
3. Make the unit plural again once the hyphens go: years, metres, hours.
4. Join the pair if a noun still follows it, even after the verb: a ten-year-old boy.
5. Keep a dictionary hyphen everywhere: left-handed, old-fashioned, good-looking.
6. Write well pairs open after the verb as a habit, and accept well-known there as British usage.
7. When unsure, check one dictionary and follow it through the whole piece.
8. Do not add hyphens after the verb just to be safe.

• Ishaan is ten years old and loves cricket.
• The singer from Assam is well known across India.
• Ria is left-handed, so the coach moved the stumps.
• The garden wall is two metres high.
• Uncle Joe thinks the plan is old-fashioned.
• Amara is a twelve-year-old swimmer from Lagos.

• Our maths teacher is open-minded and patient.
• The new Kochi bridge is four kilometres long.
• Dadi says the recipe is well tested.
• The play was three hours long, but nobody left.
• The writer is well-known in Whitby.
• In Santiago, the bad-tempered goat chewed a glove.

No hyphen after -ly

An -ly word that says how does its own joining. It tells the reader which word it describes, so a pair that starts with it needs no hyphen, even before a noun.

Compare the second row with the last: a brightly lit room, a well-lit room. The meaning is close, but well does not end in -ly, so it needs the hyphen to show it belongs with lit.

This is question four of the Join or Break Test: if the words read correctly and clearly apart, no line at all. An -ly word makes sure they do.

Not every word ending in -ly says how. Some are ordinary describing words, made from a noun, and they behave like any other describing word.

Here is a quick check. Put the -ly word straight in front of the noun. A friendly dog works, so friendly is a describing word and may join. A quickly note makes no sense, so quickly is a how word, and no hyphen follows it.

Family does end in the letters l and y, but it is a noun, not a how word. It is doing a describing job here, so family-sized is joined like any describing pair.

Picture a hyphen as a hook that couples two train carriages together so they travel as one. Most describing pairs need the hook: well-lit, part-time. But an -ly word comes with its own coupling built in, like a carriage with a magnet on its end. Brightly already clings to lit. Adding a hook as well does nothing but clutter the join, so careful writers leave it off.

This rule adds one question to the Join or Break Test. Before joining a describing pair, look at the first word: does it end in -ly and say how? Then stop, no hyphen. In the next section, you will meet the opposite case: three small beginnings, ex-, self- and all-, that keep their hyphen almost everywhere, before a noun and after the verb alike.

Here is the hard case, and it is worth slowing down for: two -ly words that look alike but do different jobs. Compare these two phrases. a kindly-looking uncle a kindly given gift Both start with kindly. But in the first, kindly means kind and gentle; it is a describing word about the uncle, the way friendly is. The uncle looks kindly. So kindly-looking is a describing pair, and many writers join it before a noun. In the second, kindly says how the gift was given: in a kind way. It is a how word, like quickly or brightly. So the pair takes no hyphen: a kindly given gift. The same test from the expanded section settles it. Put the -ly word straight before the noun. A kindly uncle makes sense, so here kindly is a describing word. A kindly gift is odd, and the meaning you wanted was how it was given, so there it is a how word. One more pair to test: an early-morning walk and an early morning. Early is a describing word here, not a how word; it tells you which part of the morning. So before walk, the pair joins. So the ending alone does not decide. Ask what job the -ly word is doing: saying how, or describing the thing? Only a how word switches the hyphen off.

The -ly ending is very old. It grew from an Old English word, lic, that meant body or form, the same root as the word like. So a friendly person was once someone friend-like, and quickly meant in a quick-like way. That is why English has both kinds of -ly word. Some, like friendly, lovely and lonely, are describing words made from nouns and other words: like a friend, full of love. Others, like quickly and brightly, are how words made from describing words: in a quick way, in a bright way. The spelling hides the difference, but careful writers feel it. And the hyphen rule follows the job, not the spelling: a how word never takes one; a describing word can.

This section covers pairs that begin with an -ly word. A hyphen after an -ly word that says how is keyed wrong, following the practice of major British and American style guides. Pairs beginning with a describing word ending in -ly (friendly-looking, curly-haired) are joined in these examples, and some writers leave them open; no question keys the open form of a kindly or early pair wrong. Well pairs after the verb were section 13. Words such as family and holy end in the letters ly but are not how words.

1. Leave out the hyphen after an -ly word that says how: a quickly written note.
2. Keep it out after the verb too: the room was brightly lit.
3. Join a well pair before a noun: a well-lit room.
4. Try the -ly word straight before the noun to test its job.
5. Join a describing -ly word like friendly or curly: a friendly-looking dog.
6. Treat family, holy and similar words as ordinary words, not -ly adverbs.
7. Never join an -ly word to the noun itself.
8. Ask what job the -ly word is doing, not only how it is spelt.

• Maa left a quickly written note on the fridge.
• The newly built bridge in Guwahati opened on Monday.
• Anil grew up in a well-lit flat above the shop.
• Hannah read in a brightly lit corner of the library.
• A friendly-looking dog waited by the gate.
• In Hanoi, Linh bought a family-sized pack of noodles.

• Dadi bought a freshly made batch of jalebis.
• A highly skilled weaver from Kanchipuram made the sari.
• Farhan went for an early-morning walk by the lake.
• The kitchen was beautifully painted and very clean.
• A curly-haired toddler waved from the train.
• In Mexico City, Sofia planned a carefully timed surprise.

Prefixes that keep a hyphen: ex-, self-, all-

Three prefixes keep a hyphen in most styles. The hyphen shows where the prefix ends and the whole word begins.

The hyphen stays wherever the word sits: an ex-captain, our captain is an ex-student; a self-taught artist, Neha is self-taught.

This is question one of the Join or Break Test: is a prefix that needs help joining a word? Then a hyphen, short and with no spaces.

Some words only look as if they start with one of these prefixes. They are single words with no prefix inside, so they take no hyphen.

Here is the cover test. Cover the prefix. If a whole word is left, and the prefix adds former, oneself or completely to it, the hyphen belongs: ex-|captain, self-|respect, all-|weather. If what is left is not the word you meant, there is no prefix, and no hyphen.

Notice too that self and all can stand alone as ordinary words: all the weather this week, a sense of self. The hyphen appears only when they are fixed to the front of another word as a prefix.

Picture ex-, self- and all- as name badges clipped to the front of a word's jacket. The clip, the hyphen, holds the badge on, but you can see where the badge ends and the jacket begins: ex-captain is still a captain, wearing a badge that says former. Words like exam or selfish have no badge at all; those letters are sewn into the cloth, part of the word itself, so there is nothing to clip.

These three prefixes are the exceptions. The next section shows the main rule for prefixes: most of them close up with no hyphen, as in rewrite, preview, unhappy and antibiotic, unless a capital letter or a number follows, as in pre-1947 or anti-British. Later, in Craft, you will meet the prefixes that take a hyphen to separate two vowels, such as re-enter and co-operate, where styles differ.

Here is the hard case, and it is worth slowing down for: all and self as ordinary words, and all and self as prefixes. Compare these two sentences. The new road is an all-weather road. The new road had all the weather thrown at it. In the first, all- is a prefix. It is fixed to weather to make one describing word, all-weather, meaning built for every kind of weather. So it takes a hyphen. In the second, all is an ordinary word meaning every bit of. It sits before the and does not join anything. So no hyphen. Self works the same way. In a self-portrait, self- is a prefix: a portrait of oneself. In a sense of self, self is a noun standing alone. And in herself or yourself, self is the ending of one closed word, not a prefix at all. Ex- is simpler, because ex is rarely a word by itself in careful writing. But watch for words where ex is only the first two letters: exam, exit, excited, extra. Cover ex and ask: is the word left the one I meant, and does ex mean former here? For ex-captain, yes. For exam, no. So the test is never just the letters at the front. It is whether a prefix meaning former, oneself or completely is fixed onto a whole word.

Each of these prefixes has its own history. Ex- comes from Latin, where it meant out of; in English it grew a newer meaning, former, as in ex-captain. That is why exit and exclude, where ex means out, are old single words with no hyphen, while ex-captain, where ex means former, keeps one. All-rounder is a word that cricket made famous. In Indian and British English an all-rounder is a player who can both bat and bowl well, and the word has spread to describe anyone good at many things. And Indian English uses all- in a way that other Englishes rarely do: an all-India rank, an all-India tour, an all-India survey. Each means covering the whole of India, and each keeps its hyphen, just like all-round and all-time.

This section covers ex- (former), self- and all- as prefixes, which take a hyphen in most styles and are keyed that way. A few closed words are established exceptions, such as selfsame, and are not tested. Words such as exam, exit, selfish, selfless, always and already are not these prefixes. Most other prefixes close up; that is section 16. Indian English forms such as all-India and all-rounder are standard. Capitals in hyphenated titles are left to Master.

1. Join ex- meaning former with a hyphen: ex-captain, ex-student.
2. Join self- meaning oneself with a hyphen: self-respect, self-taught.
3. Join all- meaning completely or covering everything with a hyphen: all-round, all-India.
4. Keep the prefix hyphen after the verb too: Neha is self-taught.
5. Use the cover test: a whole word left behind means a real prefix.
6. Never hyphenate words that only begin with the same letters: exam, selfish, always.
7. Leave all and self unjoined when they are ordinary words: all the children.
8. Write every hyphen tight, with no spaces round it.

• Our ex-captain, Rohit, still comes to every match.
• Neha is self-taught and paints every evening.
• Priti came fifth in an all-India quiz.
• Tom stayed calm and kept every bit of self-respect.
• It was the best all-round performance of the year.
• In Seoul, Min-jun ate at a self-service cafe after the exam.

• Every team needs a good all-rounder who can bat and bowl.
• Our ex-principal, Mrs Nair, opened the new hall.
• Sharing your lunch is a selfless thing to do.
• Ella painted a self-portrait for the art show.
• The station has an all-weather roof and a clear exit.
• In Nairobi, Wanjiru joined a self-defence class.

Prefixes that close up

Most prefixes join their word with no hyphen. The prefix and the word become one closed word.

This is question one of the Join or Break Test: is a prefix joining a word? Then ask whether the prefix needs help. Most do not, so the join is closed, with no mark at all.

A prefix needs a hyphen again when the next part begins with a capital letter or a number. Glued together, the two parts would be hard to read, and a capital letter in the middle of a word looks like a mistake.

Notice that the capital stays a capital. The prefix is small and the name keeps its own capital: mid-July, not Mid-july, unless the whole thing starts a sentence (Mid-July is hot in Delhi).

Compare midday with mid-July. Both use mid, but day is an ordinary word and July is a name. The name is what brings the hyphen back.

Picture a prefix as a small train carriage coupling onto an engine. With an ordinary word, the coupling is smooth and the two slide together into one train: re and write become rewrite. But a capital letter or a number is a different kind of engine, with a tall front that will not fit. So the carriage hooks on with a short bar between them: pre-1947, mid-July. The hyphen is that bar.

What happens when two describing words share one ending, as in two-year-olds and three-year-olds? English lets you write two- and three-year-olds, with a hyphen hanging after the first number. That hanging hyphen also works with prefixes: pre- and post-match talks. It is the next section.

Here is the hard case: a handful of prefix words that careful writers spell in more than one way. Some words have a hyphen in one dictionary and none in another. Non-stop and nonstop, post-war and postwar, co-operate and cooperate are all in real use. British and Indian writing often keeps the hyphen in some of these, and American writing often closes them. No question in this section marks either form wrong; pick the one your school or dictionary uses and keep it. A second group keeps a hyphen to stop two of the same vowel meeting, as in re-enter and pre-empt. A third keeps a hyphen to show a different meaning: re-cover a sofa is not the same as recover from a cold. Both of these belong to Craft, and the section on hyphens that change meaning. So the rule for this section is narrow and safe. Everyday prefix words such as rewrite, preview, unhappy, disagree and misspell are closed in every standard dictionary. A prefix before a capital or a number always takes a hyphen. The words in between are worth a dictionary check, not a guess.

Many words you think of as ordinary are prefix words in disguise. Midnight is mid plus night. Preview is pre plus view. Unlock is un plus lock. Antibiotic is anti plus biotic, a medicine that works against living germs. They closed up so long ago that nobody sees the join any more. Indian English has made its own prefix words too. Un-Indian, meaning not in keeping with Indian ways, keeps its hyphen because India is a name. Pre-Independence India, the years before 1947, keeps its hyphen for the same reason. And the pre-Diwali rush in the markets needs a hyphen too, because Diwali is a name. A capital letter is always the signal.

This section keys only words that every standard dictionary closes (rewrite, preview, unhappy, disagree, misspell, midday) and the hyphen before a capital or a number. Words that dictionaries spell both ways, such as non-stop and nonstop, post-war and postwar, co-operate and cooperate, are never keyed wrong. Doubled vowels (re-enter, pre-empt) and hyphens that change meaning (re-cover, recover) come in Craft. Ex-, self- and all- were section 15.

1. Close up everyday prefixes with their word: rewrite, preview, unhappy, disagree.
2. Never leave a prefix standing alone with a space after it: re write is wrong.
3. Keep a hyphen when the next part starts with a number: pre-1947, post-2020.
4. Keep a hyphen when the next part starts with a capital: mid-July, anti-British.
5. Let the name keep its capital: un-Indian, not unindian.
6. Remember the three exceptions from section 15: ex-, self- and all-.
7. Check a dictionary for words written both ways, such as non-stop, and keep one form throughout a piece.

• Ananya had to rewrite the last line of the poem.
• Dadi keeps a box of pre-1947 letters from Lahore.
• Wasting food feels un-Indian to my grandfather.
• Sophie watched a preview of the film at midday.
• The school fair is always held in mid-July.
• In Nairobi, the twins Wanjiru and Otieno disagree about everything.

• The doctor gave Farhan an antibiotic for a bad cough.
• Our history project is about pre-Independence India.
• Lakshmi misspelt the word necessary twice.
• In Lisbon, Inês booked a flight for mid-March.
• Callum will replay the match on Saturday.
• The post-2020 rules changed how Emma's school ran exams.

Suspended hyphens: two- and three-year-olds

When two compounds share the same ending, you can write the ending once. The first compound keeps its hyphen and leaves it hanging, with a space after it.

Both columns are standard. The right-hand column is shorter; the left-hand column is plainer.

This is question one of the Join or Break Test: are the words joining to make one describing idea? They are, twice over, so each part keeps its hyphen, even when the shared ending is written only once.

The same pattern stretches to three or more compounds. Each earlier part keeps its hanging hyphen, and the list keeps its ordinary commas.

Three small habits keep it clear. The hanging hyphen sits tight against its word: two-, not two -. A space follows it before and or or. And the unit stays singular before a noun, just as in section 12: ten- and twenty-rupee notes, not twenty-rupees.

If the phrase starts to feel like a puzzle, write each compound in full. Suspended hyphens are a shortcut, never a rule you must use.

Picture two friends sharing one umbrella in the rain. Two walks under the umbrella, year-olds, and so does three. The umbrella is held up only once, over the second friend, but the first friend reaches out a hand towards it. The hanging hyphen is that reaching hand: it shows that two belongs under the same umbrella, even though the umbrella is written further along.

So far every line in Practice has been a hyphen that joins. The next section turns to the other half of the Join or Break Test: the dash that breaks. You will use a pair of dashes to lift an aside out of a sentence, and learn why the sentence must still work without it.

Here is the hard case: when is a suspended hyphen clear, and when is it a puzzle? Compare these. two- and three-year-olds full- and part-time staff pre-, mid- and post-season training The first two are easy to read. The endings are short and familiar, and the reader fills them in at once. The third makes the reader hold three hanging parts in mind before the ending arrives. It is correct, but a reader may have to go back. So there is a second question after 'Is it correct?' The question is 'Is it kind to the reader?' Writing the compounds in full, as in pre-season, mid-season and post-season training, is always standard, and it is often the better choice for a young reader or a long list. There is one more trap. A suspended hyphen only works when the endings really are the same. First- and second-class tickets share class. But you cannot write first- and second-hand books to mean first-class and second-hand, because the endings differ. Each part must fit the one ending that is written. So check two things. Does every hanging part fit the shared ending exactly? And would the full version read more easily? If yes to the second, write it in full.

Suspended hyphens can hang from the other side too, although this is rarer. A writer can let the second compound reach back to a shared first part: English-speaking and -writing students. It is possible, but most readers stumble over it, and careful writers usually write both compounds in full instead. Indian notices are full of the ordinary kind: Hindi- and English-medium sections, morning- and evening-shift batches, tenth- and twelfth-standard students, two- and four-wheeler loans on a bank poster. You probably read suspended hyphens every week without noticing them. The reader's mind fills in the missing ending so quickly that the shortcut only shows when it is missing, and two and three-year-olds suddenly seems to be about the number two.

Writing every compound in full (two-year-olds and three-year-olds) is always standard, and nothing here marks it wrong. The keyed error is the missing hanging hyphen when both ages or sizes are meant, because the phrase can then be read the wrong way. Hyphens in prefix words follow section 16; pre-match and post-match are hyphenated in British and Indian dictionaries, so pre- and post-match keeps both hyphens. Hanging parts on the second word are described, never tested.

1. When two compounds share an ending, write the ending once and keep the first hyphen: two- and three-year-olds.
2. Put a space after the hanging hyphen, before and or or.
3. Keep every hyphen in the last compound, which is written in full: three-year-olds.
4. In a longer list, give every earlier part its own hanging hyphen: two-, three- and four-year-olds.
5. Keep the unit singular before a noun: ten- and twenty-rupee notes.
6. Check that every hanging part fits the shared ending exactly.
7. When the phrase feels like a puzzle, write the compounds in full.

• Priya runs a dance class for two- and three-year-olds.
• Our town has both Hindi- and English-medium schools.
• Coach Imran gives pre- and post-match talks to the team.
• Oliver compared the first- and second-class fares.
• Hannah carried the five- and ten-kilogram bags to the car.
• Mateo wrote short- and long-term goals in a notebook.

• Diya won prizes at the ten- and twenty-rupee stalls.
• Rohan ran in the 100- and 200-metre races.
• Sana teaches two-year-olds and three-year-olds at the playschool.
• The park has swings for two-, three- and four-year-olds.
• Jack sorted the small- and medium-sized boxes.
• In Seoul, Yuna compared the six- and eight-hour flights.

A pair of dashes for an aside

A pair of dashes lifts an extra detail out of the middle of a sentence. The first dash opens the aside; the second dash closes it.

Two checks make it safe. Cover the aside: the rest must still be a whole sentence. Then look at the closing mark: a dash that opens an aside closes with a dash.

This is question three of the Join or Break Test: is the line breaking the sentence to add something? Then a dash, and in the middle of a sentence, a pair of them.

A pair of dashes is one of three ways to add an aside. All three are standard; they differ in how loudly they speak.

Dashes are especially useful when the aside already has commas inside it. "Three friends, Meera, Dev and Salma, shared one umbrella" is hard to read, because the reader cannot tell which commas belong to the list. "Three friends — Meera, Dev and Salma — shared one umbrella" (em dashes) makes the aside clear at once.

Books print the same pair in different styles: a spaced en dash (My cousin – the one in Pune – is visiting), a closed em dash (My cousin—the one in Pune—is visiting) or a spaced em dash. All are standard. Whichever you use, use it for both dashes of the pair. On phones, a hyphen with a space each side is a normal stand-in.

Picture the sentence as a train running along a track. The aside is a small carriage you want to show off, so you lift it off the track for a moment and hold it up in two hands. The first dash is the left hand, the second dash is the right hand. The train must still run without the carriage, and you need both hands, or the carriage tips over and lands back on the track in the wrong place.

What if the aside comes at the very end of the sentence? Then the full stop does the closing, and only one dash is needed. That single dash has a job of its own too: it can hold back a surprise, a summary or an explanation until the last moment. It is the next section.

Here is the hard case: when does an aside need two dashes, and when only one? Compare these. "My cousin — the one in Pune — is visiting this week." (em dashes) "This week we have a visitor — my cousin from Pune." (em dash) In the first, the aside sits in the middle. The sentence has to carry on after it, so a second dash is needed to close the aside and let the sentence continue. In the second, the extra part runs to the end of the sentence. The full stop closes it. Adding a second dash just before the full stop would be wrong: "my cousin from Pune —." (em dash) There is nothing left to go back to. So the test is simple. After the aside, does the main sentence carry on? Then close with a second dash. Does the sentence end? Then the full stop is enough. One more thing can happen after a closing dash. Sometimes the main sentence needs a comma at that point anyway, for example before but. Careful writers usually rewrite rather than put a dash and a comma side by side, because the pair of marks looks cluttered.

Dashes are especially good at handling asides that are full of commas. Look at this. "The three winners, Anjali, Farhan and Rosa, went on stage." How many people went on stage? Three, or six? The commas round the aside and the commas inside it look exactly the same. "The three winners — Anjali, Farhan and Rosa — went on stage." (em dashes) Now nobody is confused. The dashes wrap the whole list, and the commas inside it only separate the names. That is why news writers and report writers reach for a pair of dashes whenever an aside contains a list. The dashes do a job commas cannot do.

The pair of dashes is printed in three standard ways: a spaced en dash (most British publishing), a closed em dash (most American books) and a spaced em dash (many newspapers). None is keyed wrong. A hyphen with a space each side is a normal stand-in on phones and websites. Commas and brackets round an aside are also standard (ch16 covers commas); the choice among them is Craft's. This section keys only a missing closing dash, a comma closing a dash, and an aside the sentence needs.

1. Put a pair of dashes round an aside in the middle of a sentence.
2. Cover the aside: the rest must still be a whole sentence.
3. Close a dash with a dash, never with a comma.
4. Put the whole aside between the dashes, and nothing from the main sentence.
5. When the aside reaches the end, let the full stop close it.
6. Use dashes when the aside has commas of its own.
7. Pick one printed style and use it for both dashes of the pair.
8. Keep to one pair in a sentence.

• My cousin — the one in Pune — is visiting this week.
• Kavya's grandmother — a retired maths teacher — still checks our homework.
• The rain in Chennai — heavy, loud and sudden — flooded the lane.
• Mr Evans — our old football coach — waved from the bus.
• The last train — the one Lily always misses — left on time.
• In Lagos, the market — busy since dawn — closed early for the storm.

• Ishaan's answer — wait, let me check — was forty-two.
• Three friends — Meera, Dev and Salma — shared one umbrella.
• Our school trip — the first in two years — was to Mysuru.
• Jake's old bike — rusty but reliable — still makes the trip to school.
• Chloe's concert — the first in the new hall — sold out in a day.
• In Cairo, the museum — closed for two years — has finally reopened.

One dash for a final point

A single dash near the end of a sentence holds back a final point. The reader pauses at the dash, and the last words land with extra force. The full stop closes it.

Notice there is no second dash. When the final point runs to the end of the sentence, the full stop, question mark or exclamation mark does the closing.

This is question three of the Join or Break Test: is the line breaking the sentence to add or emphasise something? At the end of a sentence, one dash does it.

A dash is not the only mark that can introduce a final point. A colon can too, and so can a plain comma or a new sentence. They differ in how loudly they speak.

All three are standard. The colon is the quiet, tidy choice for explanations and lists; Craft compares it with the dash in detail. The dash is the choice when you want the reader to feel the pause.

Because a dash is loud, it works best when the ending really is worth waiting for. "I went to school — by bus." (em dash) is not wrong, but nothing about a bus deserves the drum roll. A comma, or no mark at all, does the job more quietly: I went to school by bus.

Picture a magician about to pull something from a hat. The sentence is the patter, the dash is the moment the magician stops and the drum rolls, and the final point is the rabbit. One drum roll is exciting. A drum roll before every sentence would soon become noise, and nobody would look up for the rabbit any more.

You have now met every Practice move: fractions, describing pairs before and after the noun, -ly words, prefixes that keep or lose a hyphen, suspended hyphens, a pair of dashes and a single dash. The last Practice section puts them all together and asks you to explain your choice for each line, using the Join or Break Test.

Here is the hard case: telling a single dash at the end from the first half of a pair. Compare these. "We had one visitor — my cousin from Pune." (em dash) "We had one visitor — my cousin from Pune — and she brought sweets for everyone." (em dashes) In the first, the extra part runs to the full stop. One dash is enough, because the sentence ends where the extra part ends. In the second, the sentence carries on after the extra part. So the extra part is really an aside in the middle, and it needs a second dash to close it before the sentence can continue. The test is the same as in the last section. After the words the dash introduces, does the main sentence carry on? Then you need a pair. Does the sentence stop? Then one dash, and the full stop closes it. There is a second hard question: is this ending worth a dash at all? That is a matter of effect, not of rules. A surprise, a summary or a pointed explanation earns it. A plain fact, such as the time or the bus you took, usually does not. When in doubt, try the sentence without the dash and see whether anything is lost.

Some of the most memorable sentences in stories end with a single dash and one word. "There was only one way out — up." "I turned the key, pushed the door, and saw — nothing." (em dashes) The dash makes the reader hold their breath, and the last word lets it out. A summary dash can also run backwards. Instead of a list and then a summary, a writer can put the list first as a kind of drum roll: "Mangoes, jamun, lychees — summer in one basket." (em dash) And advertisers love the single dash. Signs and posters often read like "Fresh bread, every morning — just round the corner" (em dash), because the dash makes the last words feel like a promise. Once you notice it, you will see this dash everywhere.

The single dash is printed in the same styles as the pair: a spaced en dash, a closed em dash or a spaced em dash. None is keyed wrong, and a spaced hyphen is a normal stand-in on phones. A colon before an explanation or a summary is also standard; Craft compares the two. A dash before an ordinary ending is described as weak, never keyed as a grammar error. The keyed errors are a second dash before the full stop, a comma beside the dash, and a new idea running on after the final point.

1. Put one dash just before a final point that surprises, sums up or explains.
2. Let the full stop close it: no second dash at the end.
3. Keep one point after the dash; start a new sentence for a new idea.
4. Use a pair of dashes, not one, if the sentence carries on after the extra part.
5. Never put a comma and a dash side by side.
6. Save the dash for endings worth waiting for.
7. Use a colon for a calmer explanation or list.
8. Keep to one dash, or one pair, in a sentence.

• When the bull turned round, Aarav knew there was only one thing to do — run.
• Rice, dal, Nani's mango pickle — the perfect lunch.
• Neha checked the bag twice and found the problem — a hole in the bottom.
• Tom opened the envelope and read the result — first place.
• We waited all afternoon for one person — the postman.
• In Mexico City, Lucía saw what had stopped the traffic — a runaway goat.

• Everyone had come to watch one player — Kiran.
• Twelve hours on the road to Leh, two flat tyres, one lost bag — worth it for the view.
• Dev had saved for months for one thing — a telescope.
• Megan had only one question for the teacher — why?
• Harry trained every morning for a whole year — and won.
• In Nairobi, Amani finally found the missing key — inside a shoe.

Explain your evidence

Every Practice move answers one question of the Join or Break Test. Name the question and the reason, and you have your evidence.

The Join or Break Test is the evidence: say whether the words join, break or read clearly apart, then name the reason.

A good explanation has three parts: the words, the question and the reason. Keep it to one sentence.

Notice that strong evidence names the job of the line, not how it looks or sounds. It could be checked by someone else, and it would work on a new sentence.

Some choices have more than one standard answer. Two thirds of the class and two-thirds of the class are both used; so are commas, brackets or dashes round an aside. When that happens, the evidence is to say so: both are standard, and here is what each one does.

Picture yourself as a detective at a crime scene, and every short line in the sentence is a clue. A hunch is not enough to close the case; you need evidence. So you ask the Join or Break Test like three questions to a witness. Are these words joining? Is the sentence breaking? Or do the words stand clearly apart? The answer, with its reason, is the evidence that solves the case.

Craft begins with hyphens that change meaning. Re-cover the sofa, or recover from a cold? A man-eating shark, or a man eating shark? In Craft the hyphen is not only correct or incorrect: it can be the one mark that decides what a sentence means. After that come the en dash for ranges such as pages 10 to 25, and the full choice between dashes, commas, brackets and colons.

Here is the hard case: one sentence with several lines, each needing a different reason. "Our well-known coach — a self-taught ex-player — sent a quickly written plan for the two- and three-day camps." (em dashes) Take it one line at a time. Well-known joins, because it is a describing pair before the noun coach. The two long lines are a pair of dashes. They break the sentence to lift out an aside, a self-taught ex-player; cover it, and Our well-known coach sent a quickly written plan is still a sentence. Self-taught and ex-player keep their hyphens, because self and ex are prefixes that always do. Quickly written has no hyphen, because quickly ends in -ly. Two- and three-day uses a suspended hyphen: two shares the ending day with three, and the unit stays singular before the noun camps. Six lines, four different reasons, and one missing hyphen that is also evidence. The skill is not to find one rule for the whole sentence, but to ask the Join or Break Test again at every line.

Sometimes the best evidence is that there should be no line at all. Many learners, once they learn hyphens, start adding them everywhere: a brightly-lit room, the boy is ten-years-old, re-write. Each of these hyphens is a sign of a learner who is trying hard, and each one has a clear reason to go. A careful writer's page often has fewer hyphens than a beginner's. The skill is not in using more lines, but in placing each one where it has a job to do, and being able to say what that job is. An editor reading your work is looking for exactly that.

This review keys only what the Practice sections key. A fraction as a noun (two thirds of the class, two-thirds of the class), the post-verb pair in British usage (the singer is well known, well-known), repeating the compound instead of a suspended hyphen, and the printed style of a dash (spaced en dash, closed em dash, spaced em dash) are all standard. A spaced hyphen for a dash is normal on phones. Evidence for these is to say that both forms are in use.

1. Look at every short line, and every place a line might be missing.
2. Ask the Join or Break Test: join, break, or clearly apart?
3. Name the reason in a few words: a describing pair before a noun, one dash before a final point.
4. Check the position: before the noun or after the verb.
5. Check for -ly before adding a hyphen.
6. Check the prefix: ex-, self-, all-, or a capital or number next.
7. For a dash, check both ends: a pair in the middle, one at the end.
8. When both forms are standard, say so as your evidence.

• Riya's class chose the new timetable by a two-thirds majority.
• The singer Arundhati is well known in Kolkata.
• The team's ex-captain, Vikram, sent a quickly written note.
• Freya bought two- and three-day passes for the festival.
• Coach Davies — a former champion — rewrote the plan.
• In Tokyo, Haruto finally found the café — behind a brightly lit sign.

• Twenty-one self-taught artists showed their work in Jaipur.
• Anand's water tank was three-quarters full by mid-July.
• Pooja came first in an all-India quiz — the first win for the school.
• Ruby's treehouse has a newly painted door and a well-made roof.
• Sam is ten years old and reads stories to the six-year-olds.
• In Lima, Valentina replayed the final goal — twice.

Writing with intent · ages 12–16

Hyphens that change meaning

Some words mean one thing with a hyphen and another thing without it.

With a prefix, the closed word already exists with its own meaning, so the hyphen keeps the sense of again visible. With a describing pair, the hyphen shows which words belong together before the noun.

This is question one of the Join or Break Test: are the words joining to make one word or one describing idea? When leaving them apart would change the meaning, the hyphen stops being a choice.

Two checks find a hyphen that carries meaning.

Most re- words close up because nothing gets in the way. Nobody reads rewrite as anything but write again, so it needs no hyphen. The hyphen appears only when closing up would spell a word that already means something else.

For pairs, say the words aloud with a pause in two different places: a hot water bottle, then a hot water bottle. If the pauses give two different things (a bottle for hot water, or a water bottle that happens to be hot), join the pair you mean: a hot-water bottle.

Think of a hyphen as the thread that ties two beads together on a string. Loose beads can be picked up in any grouping: man eating shark could be man plus eating shark, or man eating plus shark. Tie two beads with thread and they must travel together. The thread does not change the beads themselves; it changes which ones move as a pair, and so it changes what the whole string says.

Numbers set the same trap. Six-foot soldiers are tall soldiers; six foot soldiers are six soldiers who march rather than ride. Twenty-odd guests means about twenty guests; twenty odd guests means twenty strange ones. An extra-large pizza is one very big pizza; an extra large pizza can mean one more large pizza added to the order. When a number or an amount sits beside a describing word, test whether the hyphen changes the count.

Here is the case that takes judgement: when is a pair so familiar that the hyphen can go? a high school teacher a high-school teacher Both are common. High school is a fixed name for a kind of school, and many styles leave a familiar open compound unjoined before a noun because no reader will group it wrongly. Others join it every time so that the rule never needs thinking about. Neither is wrong. Now compare: a used car dealer a used-car dealer Here the open version really can mislead: is the dealer used, or are the cars? The hyphen earns its place. So the question is never only 'is this a pair?' It is 'could a real reader group it wrongly?' And sometimes a hyphen cannot save the phrase at all. A French history teacher can mean a teacher of French history or a history teacher from France. A French-history teacher helps a little, but many readers skim past a hyphen. When both meanings are likely, reword: a teacher of French history, or a history teacher from France. Rewording is kinder than asking one short line to carry the whole meaning.

A single hyphen can turn a hobby into a building project. Recreation means play and rest: the recreation ground, a recreation room. Re-creation means making something again: the museum's re-creation of a Mughal garden. Both come from the same Latin verb, which meant to make again or to refresh, and English let the two meanings drift apart. Listen and you can hear the hyphen. The first sound of recreation is rek; the first sound of re-creation is ree. Resign and re-sign split the same way: resign has a z sound, re-sign keeps a clear s. So in these pairs the hyphen is doing on paper what your voice does in speech. When you write the word, the hyphen is the only way to tell the reader which sound, and which meaning, you had in mind.

Items here key a re- word only when the sentence makes the meaning clear, and key a missing hyphen in a describing pair only when the open version gives a different, likely reading. Familiar open compounds before a noun (a high school teacher, an ice cream shop) are written both ways by different styles and are never keyed. Dictionaries differ on some re- words, so this section keys only twins that the major dictionaries separate: re-cover and recover, re-sign and resign, re-form and reform, re-press and repress, re-creation and recreation. Doubled letters such as re-enter come in the next section.

1. Read every describing pair before a noun twice, grouping it two ways.
2. If the two groupings give different meanings, join the pair you mean.
3. Before closing up a re- word, ask whether the closed word already means something else.
4. Use re-cover, re-sign, re-form and re-press only when you mean again.
5. Close up re- words that have no twin: rebuild, rewrite, repaint.
6. Check numbers beside describing words: six-foot soldiers or six foot soldiers?
7. When a hyphen alone cannot settle the meaning, reword the phrase.
8. Never rely on the reader knowing what you meant; the page is all they have.

• The tailor in Lucknow will re-cover Dadi's old sofa in green silk.
• Once the fever breaks, Sameer should recover within a week.
• The club hopes to re-sign its best bowler before the auction.
• Oliver swam away from a man-eating shark in the film.
• Grace is a small-business owner with a bakery in Leeds.
• After ten years apart, Kofi's old band decided to re-form.

• The museum in Agra built a re-creation of a Mughal garden.
• After school, Tanvi spends an hour at the recreation ground.
• The bank will rebuild its branch in Kochi after the flood.
• Jack found a little-used room at the top of the library.
• Hannah wrapped a hot-water bottle in a towel.
• Carlos had to repress a laugh when the slide fell over.

Re-enter, co-operate and doubled letters

A hyphen often appears where a prefix meets a word that starts with the same vowel.

The first two rows are both standard: choose one dictionary and keep it. The last two rows keep their hyphen in every major dictionary, because closing them up would make the word hard to read or turn it into another word.

This is question one of the Join or Break Test: a prefix that needs help to join cleanly takes a hyphen. Doubled letters are the commonest reason it needs help.

When you are unsure, work through three questions.

The fourth row is the one people forget. Most prefixes join with no hyphen at all when the letters differ: reread, rearrange, preview, antibiotic. The doubled letter is what brings the hyphen in.

For the third row, the choice is yours or your publisher's. A school in Chennai following British spelling and a company in Chicago following an American dictionary will both be right, as long as each keeps to its own choice from the first page to the last.

Think of two identical beads meeting on a string. Two e's or two o's side by side blur into one long shape, and the reader's eye slides past the join. A hyphen is a small knot between them, so the eye sees two parts: re and enter, co and operate. Some dictionaries tie that knot every time; others trust readers to find the join. Both strings hold. What matters is that one necklace does not mix knotted and unknotted joins.

Doubled consonants usually need no help, because two identical consonants do not blur into one sound the way two vowels can: unnamed, misspell and overrule close up in every style. The exception is the ending -like. When a word ending in ll takes -like, three l's would meet, and many styles add a hyphen: shell-like, bell-like. Where no l's pile up, as in childlike or lifelike, the word closes up. The logic is the same as re-enter: the hyphen appears where letters would pile up and blur.

Here is the case that takes judgement: 'American dictionaries close doubled vowels' is a tendency, not a rule. The same American dictionary that writes cooperate and coordinate still writes co-op, because coop is a hen house. It still writes anti-inflammatory, because two i's are hard to read. And it lists co-owner with a hyphen, because coowner is an ugly pile of vowels. So even the closing side keeps a hyphen when readability or meaning demands it. The British side has its own drift. Many British dictionaries now list cooperate and coordinate as the main spellings and co-operate and co-ordinate as accepted variants, while still preferring re-enter and pre-empt. Indian writing shows both, sometimes on the same street: a housing co-operative society beside a shop sign for a cooperative bank. So you cannot work out every word from a rule. The practical answer is to choose one dictionary, look a word up the first time you are unsure, and then spell it that way every time in that piece. Consistency is the test a reader can see; the dictionary is the authority you can point to if anyone asks.

One famous American magazine refused both choices and invented a third. The New Yorker has for many decades written words like coöperate and reëlect, with two dots over the second vowel. The two dots, called a diaeresis, tell the reader to say the vowel as a new sound rather than blend it with the one before. It does the hyphen's job, keeping co and operate apart, without breaking the word. Most readers have never seen the mark outside the name Zoë or the word naïve, and some find it charming while others find it fussy. But it proves the point of this section. The problem, two vowels blurring into one, is real, and different publishers solve it in different ways: a hyphen, a closed word, or two dots.

Doubled e and doubled o after a prefix (re-enter / reenter, pre-empt / preempt, co-operate / cooperate, co-ordinate / coordinate, co-worker / coworker, re-elect / reelect) are both standard, and items here key one form only when the stem names the style or dictionary. Consistency within one piece is keyed. Anti-inflammatory, co-op and co-owner are keyed as hyphenated in every style, and closed prefixes before a different letter (reread, antibiotic) are keyed as closed. No ruling is attributed to a named guide.

1. Find out which dictionary your school, publisher or workplace follows.
2. When a prefix meets the same vowel, look the word up once in that dictionary.
3. Keep a short list of your spellings: re-enter or reenter, co-operate or cooperate.
4. Always hyphenate a doubled i: anti-inflammatory.
5. Always hyphenate when closing up would spell another word: co-op, not coop.
6. Close up prefixes before a different letter: reread, preview, antibiotic.
7. Never leave a prefix standing alone: re-enter or reenter, never re enter.
8. Before you hand in, search for each doubled-vowel word and check it is spelt one way throughout.

• At Howrah station, passengers may re-enter the platform with a valid ticket.
• Dr Menon prescribed an anti-inflammatory gel for Sunil's knee.
• The housing co-operative in Pune meets on the first Sunday of each month.
• Ethan's American textbook says the two countries cooperate on space research.
• Chloe tried to pre-empt the teacher's question by answering it first.
• Yuki became a co-owner of the cafe with two friends.

• The committee will re-elect Farah as treasurer this year.
• Our village co-op sells rice and soap at fair prices.
• Ishaan must reread chapter four before Friday's test.
• Liam's British editor wrote co-ordinate throughout the handbook.
• Amelia wrote reentry in an American lab report every time.
• Mateo finished the whole antibiotic course last week.

The en dash for ranges: 10–25

In careful print, the en dash means to in a range.

Every line in the second column is an en dash, except the last row, which uses words. The en dash is a little longer than a hyphen and has no spaces round it in a simple range.

This is question two of the Join or Break Test: is the line a join that means to or between? Then it is an en dash.

Three questions settle almost every range.

The last row is the trap. A 10-page report has no range in it: the hyphen joins 10 and page into one describing idea before report. Only a line that reads as to is an en dash.

Short forms are common in ranges of years. The 2024–25 session keeps only the last two digits of the second year, which Indian schools and offices use for a school or financial year. Longer ranges usually keep both years in full: 1998–2004, because 1998–04 can confuse a reader.

Think of the en dash as a short bridge with a sign on it that says to. Walk across and you go from the first number to the last: 10 to 25, Monday to Friday. If you have already said from at the start of the bridge, you need a matching to at the end, not another bridge. And a hyphen is a knot, not a bridge: it ties 10 and page together into one thing, a 10-page report, and goes nowhere.

Many styles use the en dash in scores and votes too, where it also reads as to: India won the match 3–1; the council voted 7–2 in favour. And a range can run from a known start to an open end, as in a list of events: Book club, Tuesdays from 5 p.m. Where a range stays open, write it in words rather than leave an en dash hanging with nothing after it. In ordinary writing the dash needs a number or word on both sides; reference books do print an open range such as 1960– for someone still living.

Here is the case that takes judgement: a range whose ends are more than one word. 10 June–5 July 10 June – 5 July Both appear in careful print. The en dash in the first sits closed up, as it does in a simple range. But when each end of the range already contains a space, some readers group the wrong parts: June–5 looks like a unit. So many British publishers add a space either side of the en dash when the ends have spaces in them, and some American styles keep it closed. Neither is wrong; follow your house style and keep it. When in doubt, the words are always clear: from 10 June to 5 July. That version needs no dash and no spacing decision, and it reads well aloud. The same judgement applies to times with a.m. and p.m. 9 a.m.–5 p.m. is standard, and so is 9 a.m. to 5 p.m. If a timetable already uses words elsewhere, the words may fit better; if it is a tight grid of numbers, the en dash saves space. Choose for the reader in front of you, then keep that choice through the whole document.

Printers named the en dash after a letter. In metal type, spacing and line lengths were measured in ems and ens. An em was roughly the width of a capital M in a given size of type, and an en was half of that, roughly the width of an n. The dash that ran about as wide as an n became the en dash, and the longer one, as wide as an m, became the em dash. Fonts today do not always keep those exact widths, and on a phone screen the hyphen, the en dash and the em dash can look almost the same. That is why careful writers do not rely on the eye alone: they read the line aloud. If it says to, it is the en dash, whatever it looks like on the screen.

A hyphen standing in for the en dash in a range (2019-2024, pages 10-25) is normal in texts, websites and handwriting, and items here key it wrong only under a stem that names careful or formal print. From or between followed by a dash (from 2019–2024, between 10–25) is keyed only under such a stem. Spacing round an en dash when the ends of the range contain spaces varies by house style and is never keyed. Scores and votes are mentioned, not keyed. Choices that differ by hyphen or en dash name the mark in words.

1. In printed work, use an en dash for a range: pages 10–25, 2019–2024.
2. Read the line aloud; if it says to, it is an en dash.
3. After from, write to; after between, write and. Never pair them with a dash.
4. Keep a hyphen for one joined idea: a 10-page report, a two-year course.
5. Write both years in full when the century changes: 1998–2004.
6. Use the 2024–25 form for a school or financial year, as Indian schools and offices do.
7. Follow your house style for spacing when the ends of a range contain spaces.
8. Accept a hyphen as a stand-in in quick messages; save the en dash for careful print.

• Aarav must read pages 10–25 before Monday's test.
• The school's 2024–25 session begins in April.
• The library in Kochi is open 9 a.m.–5 p.m. on weekdays.
• Olivia lived in Manchester from 2019 to 2024.
• Jack works at the garden centre Monday–Friday.
• Amara's trek in Kenya takes 5–7 days.

• The exam covers chapters 3–8, so Priya is starting tonight.
• Rahul's school book fair runs 12–16 January.
• Between 20 and 30 students join the Hindi club each year.
• Ben's history notes cover the years 1914–1918.
• Sophie texted the group: meet 4-5 at the park.
• Diego's museum tour in Lima runs 10:00–12:30 on Saturdays.

The en dash for connections: the Delhi–Mumbai train

In careful print, an en dash links two separate, equal things.

The en dash keeps its two sides separate and equal. The hyphen fuses its parts into one name or one describing word.

This is question two of the Join or Break Test: is the line a join that means to or between? A link between two equals is an en dash; a join into one is a hyphen.

Three questions sort almost every joined pair.

The second row catches a common mix-up. A Pune-born artist has no link between two things: Pune tells you where the artist was born, and Pune-born works as one describing word. So it is a hyphen, even in a style that uses en dashes for links.

The third row is a both-standard choice. Many newspapers and websites use a hyphen for links as well as joins, because most keyboards offer only the hyphen and readers understand it. That is not an error. The error is switching between the two systems in one piece.

Think of the en dash as a railway line between two stations. Each station keeps its own name and its own building; the line only links them, and trains run both ways. A hyphen is more like two rooms knocked into one house: Rolls-Royce is not a link between Rolls and Royce but a single house with one address. Ask whether you are looking at two stations or one house.

Names of two people often reveal the difference. A theory or bridge named after two scientists who worked together links two people, so careful print uses an en dash: the Einstein–Rosen bridge, named after Albert Einstein and Nathan Rosen. A double surname belongs to one person, so it takes a hyphen: a family named Ellis-Park. The mark tells the reader whether to count one person or two.

Here is the case that takes judgement: a compound in which one part is already two words. a Nobel Prize–winning author (en dash) a Nobel Prize-winning author (hyphen) In the second version, the hyphen seems to join only Prize and winning, as if the author were a Nobel author who had won some prize. Some styles, Chicago style among them, use an en dash here because the en dash reaches further than a hyphen: it links the whole of Nobel Prize to winning. The same styles write the New Delhi–Chennai flight, so that New does not seem to belong to the whole route. Many other styles, and most newspapers, keep the hyphen and trust the reader to understand. Neither is wrong. What matters is that you know which style you are following. When a phrase becomes hard to read either way, reword it. A novelist who won the Nobel Prize, or the flight from New Delhi to Chennai, needs no dash and no decision. The best line is sometimes no line at all, which is question four of the Join or Break Test.

In science, the difference between a hyphen and an en dash can tell you how many people discovered something. The Lennard-Jones potential, a formula used in chemistry to describe how two atoms attract and repel, takes a hyphen. It is named after one scientist, John Lennard-Jones, whose surname had two parts. The Einstein–Rosen bridge, an idea in physics, takes an en dash in careful print. It is named after two scientists, Albert Einstein and Nathan Rosen. A reader who knows the system can count the people from the punctuation alone: one hyphenated name, or two names linked. Scientific journals and textbooks care about this because a wrong mark silently turns one person into two, or two into one.

A hyphen for a link between two things (the Delhi-Mumbai train) is standard in many newspapers and styles, and items here key it wrong only under a stem naming a style that uses the en dash for links, such as a printed atlas or a book style. The en dash for a compound with an open part (Nobel Prize–winning) is attributed to Chicago style, which documents it; other styles keep the hyphen, and neither is keyed without the style named. Einstein–Rosen and Lennard-Jones are real names, stated as their sources give them. Choices that turn on hyphen or en dash name the mark in words.

1. Find out whether your style uses en dashes for links or hyphens for everything.
2. Say between or and in place of the line; if it fits, it is a link.
3. Use an en dash for two separate, equal things in careful print: the Delhi–Mumbai train.
4. Keep a hyphen for one name: Rolls-Royce, a double surname.
5. Keep a hyphen for one describing idea: a Pune-born artist, a Delhi-based firm.
6. Do not space the en dash in a link between two single words.
7. Accept a hyphen for links in a newspaper style, and never mix the two systems in one piece.
8. Reword a phrase that no dash makes clear: the flight from New Delhi to Chennai.

• The Delhi–Mumbai train leaves at six in the evening.
• Ishita has tickets for the India–Australia match in Chennai.
• Rohit's parent–teacher meeting is on Saturday morning.
• Emily bought a Hindi–English dictionary before the trip to Jaipur.
• Harry's uncle restores an old Rolls-Royce at weekends.
• Wanjiru flew on the Nairobi–London route last June.

• The Jammu-born cricketer signed for a new team.
• The student–teacher ratio at Neha's school is low.
• Kabir's newspaper prints the Delhi-Mumbai train with a hyphen.
• Oliver read about the Einstein–Rosen bridge in a physics magazine.
• Lucy's surname, Ellis-Park, joins two family names into one.
• Sofia drove the north–south road across Chile.

The em dash: interrupt, aside, emphasise

The em dash breaks a sentence to do one of three jobs.

The pair rule: an aside opened with a dash closes with a dash, never with a comma. Take the aside away and the sentence must still work: My cousin is visiting.

This is question three of the Join or Break Test: is the line breaking the sentence to add, interrupt or emphasise? Then it is a dash, a pair round an aside or one before a final point.

Four checks keep the em dash under control.

The end check surprises many writers. When an aside reaches the end of the sentence, the full stop does the closing, so no second dash is needed: We finally met my cousin — the one in Pune.

The count check matters because a second dash in the same sentence can look as if it closes the first. The reader has to guess where the aside ends, and a reader who guesses wrongly reads a different sentence.

Think of the em dash as a door in the middle of a corridor. An aside opens a side door, lets the reader look into a room, and then the same kind of door must close behind them before they walk on. Emphasis is a single door at the end of the corridor that swings open onto the view. An interruption is a door that bursts open while someone is still walking. Every door needs a clear reason to be there.

A question mark or an exclamation mark can sit inside a pair of dashes when the aside is itself a question or an exclamation: Our new teacher — have you met them? — starts on Monday. The aside keeps its own mark, and the closing dash follows straight after it. A comma or a full stop never sits there. If the aside is a full question, the sentence around it still ends with its own full stop.

Here is the case that takes judgement: when is a dash the right choice at all? We went to the market — and bought some fruit. We went to the market and bought some fruit. The first version promises something: a surprise, a twist, an important point. Then it delivers nothing. The reader feels let down, because the dash signalled that the next words mattered. The second version is honest. Now compare: We went to the market and bought a goat. We went to the market — and bought a goat. Here the dash earns its place. The goat is unexpected, and the pause makes the reader feel it. So the test is not 'is there a pause?' but 'does the reader need to notice what comes next?' If yes, the dash can work. If the words are ordinary, a comma or no mark at all is kinder. The same judgement settles the one-dash rule. A single dash or a single pair tells the reader that one thing in this sentence is special. Two or three dashes make everything special, so nothing is. When you want to add more than one extra idea, use commas or brackets for the quieter ones and save the dash for the one that matters most.

Some old novels used the em dash to hide things. In many nineteenth-century novels you will find dates such as the year 18— or a character called Lord — or Mr D—. The writer, or the printer, replaced part of a name or a date with a dash, so that the story seemed to be about real people and places that could not be named. The dash was a polite way of saying 'I know, but I will not tell you.' You can still see a trace of this today, when a newspaper or a book blanks out a rude word with dashes or asterisks. That hiding job is almost gone from modern writing. But it shows what the em dash has always been: a gap in the sentence, a place where the writer steps in and does something other than just carrying on.

The spacing of the em dash (closed, or with a space either side) and the choice between an em dash and a spaced en dash for these jobs are house style, taught in the next section and never keyed here; examples in this section use the spaced em dash. An aside opened with a dash and closed with a comma, an unclosed pair mid-sentence, and a comma beside a dash are keyed. Two dashes or pairs in one sentence are described by their effect and appear only in items that ask which version reads most clearly. The hidden names in older novels are described in general, with no invented quotation.

1. Before you type a dash, name its job: aside, emphasis or interruption.
2. Use a pair round an aside, and check that the sentence stands without it.
3. Close a pair with a second dash, never with a comma.
4. Let the full stop close an aside that runs to the end of the sentence.
5. Use one dash to hold back a final point that deserves the wait.
6. Use one dash where a thought breaks off or turns suddenly.
7. Keep to one dash or one pair in a sentence; use commas or brackets for the rest.
8. If the words after the dash are ordinary, use a comma or no mark instead.

• My cousin — the one who lives in Pune — is visiting on Sunday.
• Rice, dal and pickle — Aditi's idea of the perfect lunch.
• Ammu was about to answer — then the lights went out.
• Jack saw the bull and knew there was only one thing to do — run.
• Our new neighbour — a retired pilot, Ruth says — keeps bees.
• Tomás opened the letter, read the first line and — no, it could not be true.

• We finally met Kiran's cousin — the one from Pune.
• Our new teacher — have you met them? — starts on Monday, Tanvi.
• After three hours of searching, Vikram found the keys — in the fridge.
• Grace began, 'The answer is — no, let me check that again.'
• The storm — the worst in twenty years, Callum said — closed every school.
• Amina had trained for one moment — the final lap.

Spaced or closed? Dash house styles

The dash that breaks a sentence has three standard forms. The difference is only the length of the line and the spaces round it.

None is more correct than the others. The mistake is to mix them: one style in the first paragraph and another in the second, or one form opening a pair and another closing it.

This is the break half of the Join or Break Test: once you know a line breaks the sentence, your house style tells you which dash to print.

The house style for asides does not change the other lines in a piece. Hyphens still join, and ranges still close up.

Notice the range. A British style that spaces the dash round an aside still writes a simple range closed up, so the two en dashes in one British piece can look different: spaced for a break, closed for a range. That is not mixing. They are doing two different jobs.

Before you hand in a piece, run your eye down every dash and ask two questions. Is this dash breaking the sentence, or marking a range? And does every breaking dash look the same?

Think of a school uniform. One school wears blue, another wears green, and a third wears grey. No colour is the correct one; each school has chosen. What looks wrong is a student in a blue shirt with a green tie and grey socks. Dash styles work the same way. A spaced en dash, a closed em dash and a spaced em dash are three uniforms. A piece of writing wears one of them from top to bottom, and both dashes of a pair wear the same one.

A house style is usually written down in a style sheet or style guide: a list of choices such as which dash to use, which spellings to prefer and how to write numbers. Large publishers, newspapers and universities each keep one. When a question names a style ("this magazine uses spaced en dashes", "follow AP style"), that style becomes the rule for the answer, and a dash that would be standard elsewhere counts as a break in the house style.

Here is the case that takes judgement: a quotation that arrives in another style. Imagine a school magazine that uses spaced en dashes. A student quotes a sentence from an American book, printed there with closed em dashes: The author writes, "The river—brown, slow and wide—was the town's only road." (closed em dashes) Should the editor restyle the dashes inside the quotation? Many British and Indian publishers do: they treat the dash's printed form as a matter of house style, not of the author's words, and change it to match the rest of the magazine. Others leave a quotation exactly as it was printed. Both are defensible, and the magazine's style sheet should say which it does. What no style accepts is changing the author's words, or adding or removing a dash. Restyling changes only how the dash looks, never whether it is there. The same question arises with text pasted from a website or an email: often it arrives with spaced hyphens or a mix of dashes. An editor who restyles every one to the house form is not rewriting anybody. The rule is the same as for your own writing: one piece, one dash style.

The same book can wear two different dash styles in two countries. When a novel is published in both Britain and the United States, the two editions are often typeset separately, and the punctuation is restyled to suit each market. A British edition may print an aside with spaced en dashes, and the American edition of the very same sentence may use closed em dashes. Quotation marks change too: single quotation marks are common in British books and double ones in American books. The author has not changed a word. Only the house style has changed. So if you compare an Indian or British copy of a book with an American one and the dashes look different, neither printer made a mistake. Each followed its own style from the first page to the last, which is exactly what this section asks of you.

The spaced en dash, the closed em dash and the spaced em dash are all standard for an aside or a final point; items here key one of them only when the stem names the style (a British style, AP style, or a house style defined in the stem), and never key any of them wrong on its own. AP style is stated as using a spaced em dash; the British and American book preferences are stated as what most publishers do, not as universal rules. A spaced hyphen in place of a dash is normal in phone, web and handwritten text and is keyed only under a stem that names formal print or a style that requires a dash. Ranges are covered in S23; the em dash's jobs are covered in S25.

1. Before writing, find out whether your school, publisher or website has a house style for dashes.
2. If there is none, choose one of the three standard forms and write it down.
3. Use the same form for every dash that sets off an aside or a final point.
4. Make both dashes of a pair match: same length, same spacing.
5. Keep a simple number range closed up, whatever your aside dashes look like.
6. In formal print, replace a spaced hyphen stand-in with the dash your style uses.
7. When you paste in text from elsewhere, restyle its dashes to match your piece.
8. Never mark another writer's standard dash wrong just because your own style differs.

• My cousin – the one in Pune – is visiting on Sunday.
• Dev's relay team won the final—and set a school record.
• The first rain reached Kochi on Tuesday — a week ahead of the forecast.
• Grace packed everything—tent, stove and maps—the night before.
• Callum's train was late – forty minutes late.
• Wanjiru's first novel—a story set in Nairobi—was printed in New York.

• Revise pages 10–25 – the whole of Chapter 3 – before Friday.
• Reached the station - train is late!
• Nikhil's speech — short, funny and kind — ended the evening.
• Jack's recipe – a family secret – uses three kinds of chilli.
• Sophie's thesis kept one style throughout—even in the footnotes.
• Tomás wrote from Lima — the rain had finally stopped.

Dash, commas, brackets or colon?

Four marks can add information. They differ in how loudly they say it and where they can sit.

Commas round an aside are covered in Chapter 16; here they are the quiet baseline the other marks are measured against.

This is the break half of the Join or Break Test, turned into a choice: once you know the sentence breaks to add something, choose how loud the break should be.

Sometimes only some of the marks can do the job.

Whatever you choose, close the pair with the mark that opened it. A bracket closes a bracket, a dash closes a dash and a comma closes a comma. "Our new neighbour (a retired pilot, keeps bees" leaves the reader waiting for a bracket that never comes.

Think of a guide showing visitors round a museum. When the guide mentions a date in passing, it flows: commas. When the guide leans in and adds a quiet aside that visitors could ignore, it is a whisper: brackets. When the guide stops, raises a hand and says, look at this, it is a raised voice: dashes. And when the guide says, here is why this room matters, and then explains, that is a colon. Same guide, same facts, four ways of speaking.

Brackets carry their own rules for the marks round them. A comma never sits just before an opening bracket; if the sentence needs a comma, it goes after the closing bracket: "When the bell rang (at last), we ran out." A full stop goes outside a bracket inside a sentence ("see page 12" in brackets, then the full stop), but inside a bracketed sentence that stands on its own. Dashes need none of this: a dash replaces the comma it would otherwise sit beside.

Here is the case that takes judgement: a colon and a dash competing for the same ending. There was only one thing left to do: run. There was only one thing left to do – run. (spaced en dash) Both are standard. The colon is calm and formal. It says: I promised you one thing, and here it is. The dash is sudden. It says: wait for it. In an exam answer or a report, the colon usually fits; in a story, a speech or a letter to a friend, the dash may carry more life. There is one test that separates them in careful writing. A colon needs a complete clause before it: "There was only one thing left to do" can stand as a sentence. A dash is less strict and can follow a fragment: "Rice, dal, pickle – the perfect lunch." (spaced en dash) A colon there would promise an explanation after a list that has no verb. The same weighing applies between brackets and commas. If the extra words are part of what you mean ("My sister, who lives in Leeds, is visiting"), commas keep them in the sentence's flow. If a reader could skip them without losing anything ("My sister (the older one) is visiting"), brackets say so. When two marks both fit, ask what the reader should feel: calm or surprise, part of the flow or a quiet extra.

The same mark has different names on each side of the Atlantic. In British and Indian English, the curved marks ( ) are called brackets, or round brackets. In American English they are called parentheses, and the word brackets usually means the square ones [ ]. So an American teacher who asks for "brackets" may be expecting square ones, and a British teacher who says "parentheses" is using the more technical word for round ones. The name parenthesis comes from Greek words meaning a putting in beside, which describes the job exactly. Commas, dashes and brackets round an aside all do that job; they only differ in volume. So when a style guide mentions parentheses, it means the round brackets this section calls a whisper.

Commas, brackets and dashes round an aside are all grammatical; items here key a mark only for a stated purpose or reader (a quiet detail, a point to notice, an aside that already holds commas), and never key a correctly closed pair as wrong on its own. A colon and a dash before a final point are both standard; items that ask which suits a formal report say so in the stem. Keyed wrong in every style: a pair closed by a different mark, a colon used as a pair round an aside, and a colon between a verb and its object. The volume words (flow, whisper, raised voice, promise) describe effect, not grammar rules. Commas round non-essential phrases belong to Chapter 16.

1. Before adding extra words, decide how much attention they deserve.
2. Use a pair of commas when the aside belongs to the flow of the sentence.
3. Use brackets for details a reader may skip: short forms, translations, dates, page numbers.
4. Use dashes when you want the reader to notice, and when the aside already holds commas.
5. Use a colon only after a complete clause, to bring in an explanation or a list.
6. Never put a colon round an aside, or between a verb and its object.
7. Close every pair with the same mark that opened it.
8. Read the sentence aloud; if the volume feels wrong, change the mark.

• Our new neighbour, a retired pilot, keeps bees on the roof.
• The three cities – Delhi, Agra and Jaipur – form one tourist circuit.
• Farhan joined the National Cadet Corps (NCC) in Class 8.
• There was only one thing left to do: run.
• Emily finally found the missing key—in the biscuit tin.
• Yuki's grandmother makes onigiri (rice balls) every Sunday.

• The match was called off for one reason: the pitch was flooded.
• Meenakshi's grandfather (he is ninety-one this year) still walks to the market.
• The results — all 400 of them — arrived at midnight.
• Our teacher, Mr Hughes, reads a poem every Friday.
• Chloe's plan had one flaw: nobody had checked the tide times.
• The street festival in Accra – three days of music – begins on Friday.

Broken-off speech: dash or ellipsis?

What stopped the words decides the mark.

The dash sits straight before the closing quotation mark. Add no comma and no full stop: the dash is the ending.

This is the break half of the Join or Break Test, heard aloud: a dash breaks speech off; three dots let it fade.

Three smaller lines appear in speech too, and each has its own job.

The stammer shows the Join or Break Test at small scale. The hyphens in b-b-but join broken sounds into one word; the dash in I—I breaks between two whole words.

When one speaker cuts another off, the next line starts a new paragraph: "Did you finish the—" (em dash) then, on a new line, "Yes, all of it," Mateo cut in.

Picture a radio. When someone switches it off in the middle of a song, the sound stops at once: that is the dash. When someone turns the volume knob down slowly until the song fades into silence, that is the ellipsis. Both leave the song unfinished. The difference is how the silence arrived, and your reader should be able to hear it from the mark alone.

The ellipsis has a second job that belongs to Chapter 17: it marks words left out of a quotation ("The report said the river was... unusually high."). In speech, the same three dots show a voice trailing away. The mark looks the same; the job is different. When you see three dots, ask whether a writer has trimmed someone's words or a speaker's voice has faded.

Here is the case that takes judgement: a line that could be either. "I thought you said—" "I thought you said..." Both are standard, and neither is wrong on its own. What decides is what happens next in the story. If the other speaker cuts in ("I never said that!"), the dash is right: the words were stopped from outside. If the speaker trails off, realising something painful, the ellipsis is right: the words stopped from inside. The same weighing applies in the middle of a line. Compare these: "I was... I was wrong." (ellipsis) "I was—no, I am wrong." (em dash) In the first, the speaker hesitates, gathers courage and starts again. In the second, the speaker breaks off sharply to correct the thought. Same words, two different people. So do not choose the mark by habit. Read the scene, decide whether the break came from outside or from a sudden turn (a dash), or from a fading or hesitating voice (an ellipsis), and let the mark carry that to the reader.

Breaking off in the middle of a sentence is so old a trick that it has a name: aposiopesis, from a Greek word meaning becoming silent. One of the most famous examples comes from Virgil's Latin epic, the Aeneid. The sea god Neptune finds that the winds have stirred up a storm without his permission. He begins to threaten them with "Quos ego", which means "Whom I", and then breaks off, leaving the punishment unsaid, and turns to calming the sea. English translations usually print his words with a dash ("Whom I—", with an em dash), because the threat is cut short, not faded. The unfinished threat is more frightening than any finished one. That is the power of a well-placed dash: the reader supplies the rest.

Items here key the em dash for speech cut off sharply and the ellipsis for speech that trails away or hesitates, as most publishers and style guides distinguish them; a line that could be either is never keyed without a story context in the stem. The spaced en dash for an interruption, and the forms of the ellipsis (three full stops, one character, spaced dots), are house styles and are keyed only when the stem names them. A hyphen or spaced hyphen for the dash is normal in messages and is keyed only under a stem naming print. The ellipsis for trimming a quotation belongs to Chapter 17; quotation marks belong to Chapter 17.

1. Before you mark a broken line, ask what stopped the words: something outside, or the speaker's own voice?
2. Use an em dash for speech cut off by a speaker, a noise, an event or a sudden change of mind.
3. Use an ellipsis for speech that trails away, hesitates or is left hanging.
4. Put the dash straight before the closing quotation mark, with no comma or full stop after it.
5. Cut a word off with a dash straight after the last sound spoken: cupb—.
6. Join a stammered word with hyphens (b-b-but) and break a repeated word with a dash (I—I).
7. Start a new paragraph when the next speaker cuts in.
8. Follow your house style for spaced en dashes and for how the three dots are printed.

• "Wait, I think the train is—" Priya began, but the announcement drowned out the rest.
• "Well, I suppose we could try again..." Arjun said, looking at the rain.
• "I—I didn't mean to break it," said Tara.
• "Don't open the cupb—" Too late: the whole shelf fell on Oliver.
• "I was going to tell you, but... never mind," Megan said.
• "Did you finish the—" "Yes, all of it," Mateo cut in.

• "If we leave now, we can still –" The thunder cut Rohan off.
• "The winner of this year's prize is..." Mrs Kapoor paused, smiling at the hall.
• "B-b-but I did my homework!" Kiran protested.
• "I'll be there by six—no, make it seven," Jack wrote.
• Ruth's voice faded: "If only we had known..."
• "The code is four, seven, two—" The line went dead before Amara could finish.

Too many dashes

A dash loses force when it has company. Keep one per sentence, and spend it well.

Overuse is not a grammar error. Every crowded sentence above is grammatical. The rewrite is better because the reader can follow it and feel the point that matters.

This is the break half of the Join or Break Test, used sparingly: break the sentence only where a break earns its place.

When you cut a dash, choose what replaces it by the job it was doing.

Two more habits help. Never put a pair of dashes inside another pair: the reader cannot tell which dash closes which. Use brackets for the inner aside, or split the sentence. And never let two separate pairs sit in one sentence when brackets or commas can hold one of them.

Think of a highlighter pen. A page with one highlighted line tells you at once what matters. A page highlighted from top to bottom tells you nothing, because everything is marked the same. Dashes work like that highlighter. One dash in a paragraph says: this is the moment. Seven dashes say only that the writer liked the pen. Before you hand in a piece, look at where your highlighter went.

A quick way to check a draft is to count. Mark every dash on a page, then look at the sentences with more than one dash or one pair, and at any paragraph where more sentences have dashes than not. This is a check, not a law: a speech, a diary or a poem may use more on purpose. But in a report or an essay, the count usually shows where a rewrite will help.

Here is the case that takes judgement: when many dashes are a choice, not a habit. Emily Dickinson's poems are full of dashes; a diary written at speed may have one in every line; a speech may use dashes to show where the speaker pauses for effect. In these places, the dashes are the voice. Cutting them would flatten the writing, and nobody should call them errors. So the question is never "how many dashes are allowed?" It is "what does this reader need?" A friend reading your diary wants your voice. An examiner reading your essay wants to follow an argument. A parent reading a school notice wants to find the date and the time. That is why items in this section always name a reader. The same paragraph can be right in one place and tiring in another. When you rewrite, keep the dashes that the reader will feel, and replace the rest with marks that stay quiet. One more test helps. For each dash, ask: if I changed this to a comma, would anything be lost? If nothing would, change it. If the surprise or the aside would go flat, keep it.

Emily Dickinson, the nineteenth-century American poet, used dashes everywhere in her poems. When the first collection of her poems was printed in 1890, four years after her death, the editors replaced many of those dashes with commas and full stops to make the poems look more like other poetry of the time. More than sixty years later, in 1955, an edition prepared by the scholar Thomas H. Johnson printed the poems with the dashes she had written. Readers discovered that the dashes were part of the poems' sound: pauses, hesitations and sudden turns that the tidy punctuation had hidden. So a page full of dashes is not always a problem. In Dickinson's poems it is the whole point. The question is always what the dashes are doing for this reader.

Overuse is described, not keyed wrong: every item in this section asks which version suits a stated reader or purpose, or which rewrite keeps the dash that matters, never which sentence is incorrect. A sentence with two pairs of dashes, or a pair inside a pair, is treated as hard to follow rather than ungrammatical. The one-dash-per-sentence check is a guide for reports and essays; poems, diaries and speeches may use more on purpose. The facts about Emily Dickinson's first printing (1890) and Thomas H. Johnson's 1955 edition are stated as documented. Dash styles are covered in S26 and the choice between marks in S27.

1. Count the dashes on each page of a draft.
2. Keep to one dash or one pair per sentence in reports and essays.
3. Give the dash you keep to the surprise, the key point or the turn.
4. Use commas for ordinary asides and brackets for quiet extras.
5. Use a colon for an explanation or a list, and a full stop to separate two points.
6. Never nest a pair of dashes inside another pair.
7. Split a long dash-filled sentence into two or three shorter ones.
8. Judge by the reader: a diary, a poem or a speech may keep more.

• Our trip to Shimla started badly, but at the top we saw it—snow.
• My aunt (a doctor) and my uncle (a pilot) both came to the wedding.
• The results came out on Friday, after weeks of waiting, and Samir had passed—every subject.
• Lucy's speech was short. It was funny. And it ended with a promise—free ice cream for everyone.
• Daniel described the old fort: huge, silent and alone above the town.
• In Santiago, Valentina's diary is full of dashes—and in a diary, that is fine.

• Bring your kit (boots, socks and a towel) and a snack for after—fruit is best.
• Dadi's recipe is simple. Soak the dal overnight, cook it slowly and add one secret—a pinch of hing.
• The meeting in Room 4 starts at ten.
• After ten attempts, Toby's rocket finally flew—straight into the pond.
• The concert, which lasted three hours, ended with one song everyone knew.
• Kwame's report has one dash, saved for its main finding—the river is cleaner than ten years ago.

Edit for a real reader

The Join or Break Test is the editor's routine at every line: joining, linking or breaking? Then check it against the style sheet, and keep it when it already passes.

Every decision falls into one of three kinds. Knowing which kind you are making is what lets you give a reason.

The middle row needs the most care. In a phone message or on a website, Mumbai-Pune with a hyphen and a spaced em dash would be perfectly normal. They are fixed here only because this sheet asks for something else. Say so in your reason, so the writer knows the line was not a mistake in general.

Think of a referee with a rule book and a match sheet. Some fouls are fouls in every league: a trip is a trip. Some rules belong to this competition only, like how many substitutes are allowed. And most of the time, play is fair and the referee's job is to let it flow. An editor with a style sheet works the same way: whistle the real fouls, apply this competition's rules, and never stop the game for a move that was fair.

Professional editors usually return a piece with two things: the changes, and a short note or query for anything that is a choice rather than an error. A query is a polite question to the writer, such as: "The sheet uses spaced en dashes; I have changed these two. Is that all right?" Queries let a writer keep a deliberate choice, like a poet's dashes, while the editor still applies the house style everywhere else.

Here is the decision that takes judgement: a line that is neither clearly wrong nor clearly right. Suppose the draft had said: "Our relay team won the Mumbai–Pune final. It was our proudest moment." There is no dash at all now. Nothing breaks the sheet, and nothing is wrong. Should the editor put a dash back, because the original writer clearly wanted emphasis? Usually, no. The editor's job is to make the writer's choices correct and consistent, not to impose the editor's own taste. Two short sentences are a standard, calm way to make the point. If the editor thinks a dash would read better, the right move is a query, not a silent change. The opposite case needs care too. The draft's "— our proudest moment —" (spaced em dashes) is a pair round a phrase at the end of a clause; the sheet's style turns it into "– our proudest moment –" (spaced en dashes). The editor changes the form of both dashes together, and leaves the writer's emphasis alone. So in every line, separate three questions. Is it wrong? Does it break the sheet? Or is it a choice I would make differently? Only the first two justify a change.

Even dictionaries edit their hyphens. When the sixth edition of the Shorter Oxford English Dictionary appeared in 2007, its editors had removed the hyphens from about 16,000 compound words. Some were closed up into one word, such as bumblebee and leapfrog; others were split into two, such as ice cream. The editors explained that people increasingly wrote these words without hyphens, and the dictionary followed the usage. That is why a style sheet names a dictionary or a spelling list. Ice cream, ice-cream and icecream have all appeared in print, and different dictionaries have preferred different forms at different times. An editor who knows this does not mark a writer's ice-cream as wrong; the editor checks what the sheet's chosen dictionary says, and makes the piece match it.

Items here key a change only when it is wrong in every style (a two-part number without its hyphen, a missing hyphen before a noun, a hyphen after an -ly adverb, hyphens in an age after the verb, a pair closed by a different mark, the wrong one of re-cover and recover for the stated meaning) or when it breaks the style sheet named in the stem (an en dash for connections, spaced en dashes for breaks, from and to in words). Co-operate, English-medium and two-lakh are standard and never keyed as errors. A hyphen for an en dash, and a spaced em dash, are keyed only because the sheet names otherwise. The Shorter Oxford figure of about 16,000 hyphens removed in 2007 is stated as widely reported.

1. Read the style sheet first, and write its choices at the top of the draft.
2. Run the Join or Break Test on every line: joining, linking or breaking?
3. Fix errors that are wrong in every style: numbers, pairs before a noun, -ly adverbs, ages after the verb, mismatched pairs.
4. Fix lines that break the sheet, and say the sheet is the reason.
5. Keep every standard choice the piece already makes, including Indian English compounds.
6. Check meaning hyphens (re-cover, re-sign, re-form) against what the sentence means.
7. Change both dashes of a pair together.
8. Give a short reason for every change, and send a query for any choice of taste.

• Twenty-one schools took part in the meet.
• The well-known coach Ms Farida Sheikh – a former national champion – opened the meet.
• Parents from our English-medium school co-operated with the organisers.
• Our captain, Harriet, is fifteen years old and won the 100-metre sprint.
• The old high-jump mats had been re-covered by Mr Ellis for the day.
• The visiting judge, Mr Okafor, read out the result: 42–38 – a school record.

• Our relay team won the Mumbai–Pune final – our proudest moment.
• Ananya's notes say the teacher–parent meeting ran from 4 to 6 p.m.
• Vikram confirmed that a two-lakh grant paid for the new floodlights.
• The newly built track was ready just in time for Oliver's heat.
• Mr Ellis's timetable listed the meet as 12–14 January.
• Mr Okafor praised the co-ordination of the volunteers.

Thinking like a writer · ages 16–19

A short history of hyphens and dashes

The three lines grew up at different times, to solve different problems. The table sets the story in order, with dates kept as broad as the evidence allows.

Every row still shows in the Join or Break Test: the hyphen's history is the history of joining, and the dashes' history is the history of breaking and linking.

The names of the dashes are the clearest trace of the print shop. A printer set each line from small metal pieces, and blank spaces and dashes were cut to standard widths.

So the names are not about meaning at all. An em dash is not 'the emphasis dash', and an en dash is not 'the end dash'. They are simply the one-em piece and the one-en piece, and their jobs were settled by use.

The typewriter explains the stand-ins. A standard typewriter keyboard had one short line, shared by the hyphen and the minus sign, and no room for two dashes. Typing manuals taught writers to type two hyphens for a dash, and many writers spaced a single hyphen instead. When word processors arrived, many learnt to turn two typed hyphens into a real dash, which is why a double hyphen still becomes a dash in many programs today.

Picture a printer's tray of type, a wooden case with small boxes for every letter and mark. In one box lie the short hyphens. In the next lie slightly longer pieces, each as wide as the letter n. In a third lie long pieces, each as wide as the letter M. The writer's job is the printer's old job: reach into the right box. A hyphen joins, an en piece links a range or a pair, and an em piece breaks the line open.

This section opens the Master band by going back to the beginning. Discover S1 and S9 showed the hyphen's two jobs, the joining hyphen and the line-end hyphen; Discover S6 and S7 showed the dash that breaks a sentence. Craft S23 and S24 used the en dash for ranges and links, and Craft S26 showed the spaced and closed house styles. Here those same marks get their history. S32 follows the hyphen forward in time, as compounds lose it.

Here is the hard case: explaining why three different lines exist when one would seem to do. A student argues: 'A line is a line. The reader can tell from the words whether it joins or breaks, so we only need one.' The argument sounds modern and efficient, and it has history partly on its side: the typewriter did give everyone one line for all three jobs, and writers managed for decades. But look at what happened in that century. Typists invented stand-ins at once: two hyphens for a dash, a spaced hyphen for a pause. Readers needed a visible difference between 'joined' and 'broken', and when the keyboard took it away, writers put it back with the tools they had. When computers made separate characters easy again, printers and publishers went straight back to the three. Now test the one-line idea on a real sentence. 'The Delhi Mumbai flight left at 9 5 hours late' is unclear with no lines. With lines, each job becomes visible: 'The Delhi–Mumbai flight left at 9 — 5 hours late' shows a link between the two cities and a break before the delay. The history shows that the difference between the lines is not decoration; it is information the reader uses. So the Master answer is not 'three lines because the rules say so'. It is: three lines because joining, linking and breaking are three different jobs, and every time writing technology removed the difference, writers found a way to put it back.

The name of the em dash has nothing to do with emphasis. An em is a printer's measure, roughly the width of a capital M in whatever size of type is being set, and the em dash is simply a dash one em long. The en dash is half an em. A printer could have called them the long dash and the middle dash; the names stuck because they were the names of the metal pieces on the shelf. A second surprise: the word hyphen is older than any dash. It comes from Greek words meaning 'under one', because early grammarians wrote a small curved mark beneath two words to show that they were to be read as a single word. The mark moved from under the line to between the letters, but it kept its job of making one out of two.

This section keeps its dates broad on purpose. Marks at line ends appear in manuscripts across many centuries and many scripts, with more than one shape, and no single first use can be named. The widths of the em and en are traditional printers' measures; in modern digital type they follow the design of each font, so an em dash in one font may be shorter than in another. The typewriter keyboard described is the common English layout. The stand-ins are described, not condemned: they remain normal in plain text and on phones.

1. Explain the names correctly: em and en are printers' measures, not abbreviations of emphasis or end.
2. Keep the history to what is certain; say 'in medieval manuscripts' or 'by the age of print' rather than naming a first.
3. Tell the line-end hyphen, which splits one word for space, from the joining hyphen, which belongs to the word.
4. Read old spellings such as to-day in their own time, without correcting them.
5. Treat the double hyphen and the spaced hyphen as typewriter habits that live on, normal in plain text, and use the real dash in formal print.
6. When someone asks why there are three lines, answer with their three jobs: join, link, break.

• The museum in Thanjavur shows a twelfth-century palm-leaf manuscript.
• Farhan's essay covers the years 1450–1550, the first century of European printing.
• The compositor reached for the widest dash in the case — the em.
• Oliver's grandfather typed every report on a forty-year-old typewriter.
• Grace found an old letter that promised a visit to-morrow.
• In Athens, Eleni studied a well-preserved Greek grammar scroll.

• Nani's old typing manual said a dash should be two hyphens.
• The 1920–21 volumes of the Madras newspaper are kept in the archive.
• Ishaan compared a hand-set page with a computer-set one.
• The printer's case held three lines — hyphen, en and em — in separate boxes.
• Hannah's grandmother still types a dash as a spaced hyphen on the phone.
• In Lagos, Tunde read a hundred-year-old novel full of line-end hyphens.

Words that lost their hyphen

Compounds often travel in one direction as they grow familiar. The table shows the three stages, with words that are in each stage now or were in the past.

This is the Join or Break Test seen across time. The words are joining to make one word, so they take a hyphen; when the join is complete, the word needs no hyphen at all.

The dates below are the ones that can be stated with confidence. Most changes happen gradually, with both forms in print for years.

The drift is not only toward closing. Some hyphenated compounds split open instead. In 2007 a new edition of the Shorter Oxford English Dictionary was widely reported to have removed the hyphen from about 16,000 entries. Some closed up, such as bumblebee and leapfrog; others opened into two words, such as ice cream and fig leaf.

Picture two travellers on a long road. At first they walk side by side with a gap between them: web site. As they grow close, they link arms: web-site. At the end of the road they have walked together so long that they move as one person: website. Travellers set out at different times, so on any day you meet pairs at every stage. The one who links arms is not behind the times; the pair is simply partway along.

This section follows the history of S31 forward. Discover S1 showed the hyphen joining words into one, and Practice S16 showed prefixes that close up (rewrite, preview). Craft S22 showed words that vary by style (co-operate or cooperate). Here the same variation is seen across time, as compounds move from open to hyphenated to closed. S33 looks at the same variation across dictionaries at one moment in time.

Here is the hard case: deciding which of two current forms to use when the drift is still happening. A student is writing a report for a school magazine. The first draft uses e-mail throughout. A friend reads it and says, 'Nobody writes e-mail any more. It's wrong.' A teacher reads it and says nothing about it. Who is right? Start with what is certain. E-mail was the usual form when the word was new. Many writers and publishers have moved to email; the AP Stylebook, used by many American newspapers, changed its entry in 2011. Many dictionaries list both forms. So e-mail is dated in some styles and still current in others. The friend is right that it looks older; the friend is wrong that it is an error. Now apply the Master move. Ask which style the magazine follows. If it has a style sheet that says email, change every e-mail to email. If it has none, either form is standard, and the only error would be using both. A good edit note would say: 'Our style is email; changed for consistency', not 'e-mail is wrong'. The same reasoning works for every compound in the middle stage: check the style in use, keep one form, and describe the other form as older, not incorrect.

The word today once carried a hyphen that many readers now find strange: to-day. It appears in many books and newspapers printed in the late nineteenth and early twentieth centuries, alongside to-morrow and to-night. The hyphen made sense: to and day had once been two words, as in 'to this day'. As the words fused in speech, the hyphen became a leftover and dropped away. A second surprise: the drift can run the other way. A new edition of the Shorter Oxford English Dictionary in 2007 was widely reported to have removed about 16,000 hyphens, and some of those compounds did not close up. Ice-cream and fig-leaf split into two open words instead.

Dates in this section are either broad (the early twentieth century) or tied to a published change (the AP Stylebook's entries for website in 2010 and email in 2011; the 2007 Shorter Oxford edition, as reported at the time). Other dictionaries and house styles changed at other times or not at all. The three-stage path is a strong tendency, not a law: some compounds stay hyphenated for centuries (mother-in-law), and some split open. Older forms are described as dated, never as errors.

1. Describe a compound's stage (open, hyphenated or closed) before judging it.
2. Call an older form dated, not wrong: on-line, to-day and e-mail were standard in their time.
3. Check the dictionary or style sheet your reader uses for any compound still in the middle stage.
4. State a date for a change only when it is certain, and otherwise say 'during the twentieth century'.
5. Remember that some compounds open up instead of closing: ice cream, not icecream.
6. Keep one form of each compound through a whole piece of writing.

• Dadi's 1938 diary says the exam results came out to-day.
• Rohan sent the form by email before the deadline.
• The school's website lists every holiday for the year.
• Emily's grandfather still writes e-mail with a hyphen.
• The old guidebook advised booking hotels on-line.
• In Nairobi, Wanjiru ordered two ice creams after the match.

• Anjali logs in to the portal every morning.
• Manoj reads the newspaper on the train to Pune.
• Naseem's mother-in-law has read the same paper for forty years.
• Jack spent the weekend fixing an old bicycle.
• Sophie co-operated with the team on the new e-book.
• In Montreal, Luc keeps a well-used bumblebee guide on the shelf.

Open, hyphenated or closed? When dictionaries differ

Many compounds are spelt differently by different dictionaries and publishers at the same time. All the forms in the right-hand column appear in respected sources.

The Join or Break Test still starts the thinking: the words are joining into one idea. It cannot decide which stage of the join a dictionary records, so the dictionary or house style decides that.

Not every difference is a dictionary variant. Some compounds change form because of their job in the sentence, and that change follows the Join or Break Test in every dictionary.

So there are two questions to ask of any compound. First, is the form set by its position or job? If so, the Join or Break Test decides. Second, is the form a matter on which dictionaries differ? If so, the dictionary or house style decides, and consistency is the only rule.

British dictionaries have tended to keep more hyphens than American ones, though both have been dropping hyphens for decades. A writer in India may meet both traditions in one week: a British-style textbook and an American-style website.

Picture two maps of the same city, printed by two companies. One calls a road Station Road; the other calls it Railway Road. Both maps are accurate, and a traveller with either one will arrive. The only way to get lost is to use both maps at once and switch names halfway. Dictionaries are maps of spelling: choose one and read from it all the way.

This section builds on S32, which showed compounds drifting over time, and on Craft S22, where co-operate and cooperate varied by style. It also recalls Practice S12 and S13: a describing pair joins before the noun and often opens after the verb. Here the two ideas are separated: position rules hold in every dictionary, and dictionary variants are settled by choosing one source. S34 applies the same thinking to Indian English conventions.

Here is the hard case: a sentence in which a position rule and a dictionary variant appear together. Read this line from a school report: 'Our full-time counsellor supports student wellbeing, and works full time on healthcare awareness.' An editor from another school circles three words: full time, wellbeing and healthcare. Which circles are fair? Start with full time. In 'a full-time counsellor' the pair describes the noun, so it joins. In 'works full time' the words follow the verb, and many styles leave them open. The report has done both correctly; the circle is unfair. Changing the second to full-time would be accepted by some styles, but it is not a correction of an error. Next, wellbeing. Some dictionaries list well-being first; others list wellbeing. Without a named style, the report is standard. The circle is fair only if the report writes well-being somewhere else. Finally, healthcare. The same reasoning applies: healthcare and health care both appear in respected dictionaries. So the fair edit is none of the three, unless the report is inconsistent elsewhere. The Master move is to ask two questions of every circled compound: is its form set by position, and if not, is it the same everywhere in the document?

The word ice cream is written differently on the two sides of many British high streets. A dictionary may list the food as ice cream, open; the van outside may say ice-cream van, hyphenated before the noun. Both follow a logic: the food is a noun made of two words, and the van is described by a pair of words joined before its noun. A second surprise: your spellchecker may disagree with your dictionary. Many word processors default to American spelling and will underline forms that a British or Indian dictionary lists as standard. The underline shows which dictionary the program uses, not that the word is wrong.

The forms listed as in use are all found in respected dictionaries and publications; which form a particular dictionary lists first changes between editions, so this section does not attribute a form to a named dictionary. The tendency of British dictionaries to keep more hyphens is a general tendency, not a rule for every word. After the verb, some styles keep the hyphen in full-time and similar compounds; the open form is described as common, not required.

1. Ask first whether a compound's form is set by its position or job: before a noun, after a verb, verb or noun.
2. If position decides, apply the Join or Break Test in any dictionary.
3. If dictionaries differ, choose one dictionary or house style for the whole document.
4. Keep a short list of your chosen forms (wellbeing or well-being, healthcare or health care) and check the draft against it.
5. Never correct another source's standard variant as an error; point out inconsistency instead.
6. Treat a spellchecker's underline as one dictionary's opinion, and check its language setting.

• Tanvi's essay on student wellbeing uses the same spelling all the way through.
• An ice-cream cart waits outside the gate of the school in Kochi.
• Vikram found a full-time job, and now works full time at the clinic.
• The council's report on health care was praised by every reviewer.
• Ruby needed an hour for the set-up before the concert.
• In Seoul, Min-jun's hardworking team finished the project early.

• The decision-making process at the Jaipur trust took three months.
• Pooja checked in at noon and left a bag at the check-in desk.
• The Lucknow school has a long-term plan for its library.
• Megan's recipe book spells ice cream as two words on every page.
• Harry's spellchecker flagged well-being, though the school dictionary lists it.
• In Mexico City, Ana's team wrote a short guide to healthcare for new parents.

Hyphens in Indian English

Indian English has its own standard compounds. Each one still passes the Join or Break Test: the words are joining into one describing idea or one word.

So the Join or Break Test works across varieties. The words differ from British or American English; the reasoning is the same.

Two patterns need care: numbers with lakh and crore, and the lines in year spans and routes.

The hyphen in 2024-25 and Delhi-Mumbai is not a mistake. Craft S23 and S24 showed that a hyphen for the en dash is normal outside formal print, and Indian government and newspaper style often uses it. A typeset book or a style sheet that asks for the en dash will use it instead. Neither is keyed wrong without a named style.

Lakh and crore also stay singular after a number: two lakh people, not two lakhs people, in most Indian English usage, just as English writes two hundred, not two hundreds.

Picture one toolbox carried by writers in Chennai, London and Chicago. Each writer builds different things: an English-medium school, a council-run library, a two-car garage. The hammer and nails are the same. The hyphen is a nail that joins two words into one describing idea, wherever the builder lives. You judge the joint, not the builder's accent.

This section applies the whole chapter to one variety of English. Practice S12 joined a describing pair before a noun; Practice S15 kept the hyphen after ex- and all-; Craft S23 and S24 used the en dash for ranges and routes, with the hyphen as a normal stand-in. S33 showed that dictionaries differ. Here Indian English conventions join that picture as standard forms. S35 turns to how all three lines are typed.

Here is the hard case: an editor abroad reviewing an Indian report. The report says: 'The 2024-25 budget includes a ten-crore grant for Hindi-medium schools, and two lakh students will benefit. Travel between cities used the Delhi-Mumbai Rajdhani.' The editor, used to a British house style, circles four things: 2024-25, ten-crore, Hindi-medium and Delhi-Mumbai. Which circles are fair? Take ten-crore and Hindi-medium first. Each is a describing pair before a noun: a ten-crore grant, Hindi-medium schools. The Join or Break Test requires the hyphen in any variety. Those circles are unfair. Now two lakh students. It is open, and the editor did not circle it. That is right: two lakh is a number, like two hundred, and numbers before a plural noun stay open. Finally 2024-25 and Delhi-Mumbai. Both are ranges or connections, where formal print often uses an en dash. The report uses a hyphen, which is standard in Indian official and newspaper writing. If the publisher's style sheet asks for the en dash, the editor may change both, with a note naming the style. Without that, the circles are unfair. So a fair edit might change nothing at all. The Master move is to ask of each line: is it doing its job by the Join or Break Test, and does any named style ask for something else?

Kinship words show how precise Indian English can be. Co-brother names one exact relation: in Indian English, the husband of your wife's sister. Co-sister names another: usually the wife of your husband's brother. British and American English have no single word for either, and a writer must use a phrase. The hyphen does exactly what it does in mother-in-law, joining words into one kinship term. A second surprise: a two-wheeler is not a describing pair at all but a noun. The hyphen joins a number and a word into one thing, the way a three-wheeler and a four-wheeler do. Many Indian readers use the word daily without noticing it is a compound.

Indian English usage varies by region, publication and generation. Cousin-sister and cousin-brother are also written open; co-sister is used for more than one relation in some families and regions, and the definitions here give the most common sense. The hyphen in 2024-25 and Delhi-Mumbai is described as common in Indian official and newspaper use, not as the only Indian form; typeset books often use the en dash. No form here is ranked above its British or American equivalent.

1. Treat Indian English compounds as standard: English-medium, two-lakh, cousin-sister, co-brother, non-veg.
2. Explain each hyphen with the Join or Break Test, as you would for any variety.
3. Join a lakh or crore amount before a noun (a two-lakh loan); leave a plain number open (two lakh people).
4. Keep lakh and crore singular in a measure and after a number.
5. Accept 2024-25 and Delhi-Mumbai with a hyphen; use the en dash where formal print or a named style asks for it.
6. When writing for readers abroad, explain an Indian term in a short phrase the first time; do not replace it.

• Aarav studied at an English-medium school in Guwahati.
• The bank approved a two-lakh loan for Nisha's shop.
• Two lakh pilgrims reached Puri for the festival.
• Tom's colleague in Bengaluru ordered a non-veg thali for lunch.
• Lucy took the Delhi–Mumbai Rajdhani on a work trip.
• In Dubai, Yusuf met a cousin-sister from Hyderabad at the airport.

• The 2024-25 session begins in June at Deepa's college.
• Kabir's co-brother drove from Surat for the wedding.
• The ex-servicemen's canteen in Jalandhar opens at nine.
• Chloe's guidebook explains that a two-wheeler is a scooter or motorbike.
• Daniel's firm planned an all-India launch in March.
• In Kathmandu, Pema's pure-veg restaurant serves a Gujarati thali.

Typing hyphens and dashes

One key types the hyphen. The two dashes need a method that depends on the device.

Typing does not change the Join or Break Test. It only changes how much effort the right mark takes. The test still decides whether the line joins, links or breaks.

Several characters look like a short horizontal line. Only three are the lines this chapter teaches.

When the right mark is not to hand, writers use stand-ins. Each has its place.

Because many phone fonts draw the three lines at almost the same length, and many screen readers do not announce them, careful writers name the mark in words whenever the mark itself is the point, as this chapter's questions do.

Picture a single door on the keyboard marked with a short line. Walk straight through and you reach the hyphen. Behind that door are two hidden rooms: hold the key down on a phone, or add Option or Alt on a computer, and a panel slides open onto the en dash and the em dash. The stand-ins are what people type when they do not know the panel is there.

This section turns the chapter's marks into keystrokes. Discover S7 told the short line from the long line; Craft S23 used the en dash for ranges and Craft S26 compared spaced and closed dash styles. S31 explained why typewriters left us two hyphens for a dash. Here those habits meet today's keyboards. S36 looks at how other languages use the dash.

Here is the hard case: the same sentence is right in one place and a slip in another, without a single letter changing. A student types a message to a class group on a phone: revise pages 10 to 25, then the final point, the test is on Friday. The phone version joins 10 and 25 with a plain hyphen, standing for an en dash, and puts a spaced hyphen before the final point, standing for a dash. In a class group, both are normal, and every reader understands them. The next day the student pastes the same sentence into the class newsletter, which is printed and follows a style sheet asking for the en dash in ranges and the spaced en dash for a break. Now both stand-ins are slips against the style. The printed line should read: 'Revise pages 10 to 25, and the test is on Friday', or, with the real marks, pages 10 and 25 joined by an en dash, and a spaced en dash before the final point. Nothing about the grammar has changed. The Join or Break Test gives the same answer in both places: a link for the range, a break before the final point. What changed is the medium and the style. The Master move is to see that a stand-in is a matter of typing and medium, not of grammar, and to judge it only against the style the text is written for.

Many word processors will type a real dash for you if you type two hyphens. Type a word, two hyphens and another word, and the program often replaces the pair with a dash as you type the space after the second word. The exact dash depends on the program and on whether you left spaces, so it is worth checking which one appeared. A second surprise: the key you press for a hyphen is officially the hyphen-minus, a single character that has to serve as both a hyphen and a minus sign. A true minus sign exists as a separate character, a little wider and set at the height of the plus sign, and careful maths typesetting uses it.

Keyboard layouts and apps differ. The long press on the hyphen key works on many phone keyboards but not all, and the order of the options varies. The Windows codes need a number pad or a Num Lock layer, and some laptops need another method. What a word processor does with a double hyphen depends on its settings and on spacing. The methods listed are the common ones; this section does not list every app. Stand-ins are described as normal outside formal print, never as errors.

1. Learn one method for each dash on each device you use: the long press, the Alt codes or the Option keys.
2. In messages, email and plain text, accept the stand-ins: a hyphen for a range, a spaced hyphen or two hyphens for a dash.
3. In formal print or under a style sheet, type the real en dash and the real dash the style asks for.
4. After autocorrect changes two hyphens, check which dash appeared.
5. Do not use an underscore or a minus sign in place of a hyphen in a word.
6. When the mark itself matters, name it in words, because many fonts and screen readers hide the difference.

• Sana long-pressed the hyphen key and found the em dash.
• Karthik used Alt+0150 to type the en dash in pages 10–25.
• Divya's word processor turned two hyphens into a dash — a small surprise.
• Ella's text said: see you at six - bring snacks!
• Sam checked that the twenty-page appendix used real en dashes.
• In Tokyo, Haruto set up a three-step shortcut for the em dash.

• Rehana's laptop typed an em dash with Alt+0151 — slowly, but it worked.
• Mohan typed the en dash in pages 12–18 with Option and hyphen.
• Farida's screen reader said the word e-book clearly but skipped the dash.
• George's email gave the dates as 2019-2024.
• Isla's editor replaced every double hyphen in the draft with a real dash.
• In São Paulo, Beatriz found three look-alike lines in the phone's symbol menu.

Dashes across languages

The Join or Break Test still works across languages: a hyphen joins, a dash breaks. What changes is what each language asks the break to do.

In the printed examples the long lines are dashes, usually set as em dashes; the short line in the Hindi pair is a hyphen.

Three of these conventions reward a closer look, because each one shows a language giving a mark a job English never gave it.

The names of the marks tell their own story. French calls the hyphen the trait d'union, which means a line of union: the name says join. Spanish separates the guion, the hyphen, from the raya, the long dash. Hindi grammar books call the hyphen the yojak chihn, the joining sign. Each language names the short line for what it does.

English writers have borrowed the dialogue dash too. James Joyce printed speech in his novels with an opening dash instead of quotation marks, a choice readers of Ulysses notice on its first pages. Inside English, that is a deliberate literary style, not the school standard.

Picture the dash as a traveller with one suitcase and a different job in every country. In Madrid it works as a doorman, opening the door on each line of speech. In Moscow it stands in for a missing word, holding the place where English would put is. In Paris it waves in each new speaker. In Delhi its shorter cousin, the hyphen, holds hands between paired words, while the danda closes each sentence like a gate. The traveller is the same line; the job comes from the country.

This section widens the view from English. S31 showed how the hyphen and the dashes grew in print; S34 described Indian English compounds; S35 showed how each line is typed, which matters again for the danda and the raya. Craft S28 contrasted the dash that cuts speech off with the ellipsis, and Chapter 17 set out English quotation marks. S37 now returns to English and compares the style guides that decide its dashes.

Here is the hard case: an English essay that quotes a Russian line. Neha writes about a Russian novel for a literature class and wants to quote a line in which a character states that Moscow is the capital of Russia. In the original, the line has a dash between Moscow and capital and no word for is. Neha has three choices. The first is to copy the Russian exactly, dash included, and add an English translation in brackets. The second is to translate the line into English, which means supplying is and dropping the dash. The third is to mix the two, writing Moscow, then an English dash, then the capital of Russia, as if the dash could come across unchanged. The first two are both sound. A quotation in the original language keeps its own marks, because a quotation must be exact. A translation is English, so it follows English rules and needs a verb. The third is the trap. Moscow followed by a dash and the capital of Russia is not an English sentence: it has no main verb. In English a dash cannot stand in for is. What looks like faithfulness to the source is really a new English error. The lesson is exact: decide which language each line is in, then punctuate it by that language's rules. Quote the original with its marks, or translate the meaning with English marks. Never translate the words and keep the foreign punctuation.

The French name for the hyphen is trait d'union, which means a line of union. Centuries before anyone wrote a Join or Break Test, French had put the test into the mark's name: the short line joins. French uses it inside many everyday words and names, such as peut-être (perhaps) and the double first name Jean-Paul. A second surprise: English literature has its own dialogue dashes. James Joyce disliked quotation marks, and his novels open lines of speech with a dash, as many French and Russian novels do. A reader who meets that style in Joyce is seeing an English writer borrow a convention, not break a rule by accident.

This section states only conventions that are well established: the Spanish raya in dialogue, dialogue dashes in many French and Russian novels, the Russian dash between two nouns in place of is, and the Hindi yojak chihn and danda. Printing practice varies between publishers, and French novels in particular mix guillemets and dashes in several ways. The Hindi, Spanish, French and Russian lines are simple examples written for this section and glossed in English; the characters named in them are invented. No convention here is ranked above another.

1. Decide which language each line is in before you judge its marks.
2. Quote a foreign line exactly, with its own dashes, hyphens and danda, and add an English translation.
3. When you translate, carry the meaning and use English marks: the Russian dash becomes is, the raya becomes quotation marks.
4. Describe another language's convention in neutral words; never call it a mistake.
5. In English prose, use English quotation marks for speech unless you are choosing a literary style on purpose.
6. Type the real character for a foreign mark: the danda, not a vertical bar.

• Riya's Hindi notebook writes माता-पिता with a hyphen.
• माँ ने कहा — जल्दी आओ।
• In English, Arjun writes the aside with a pair of dashes: my aunt — a Russian teacher in Pune — sent the book.
• —Ya voy —dijo Marta—, espera un momento.
• In Leeds, Harriet's Russian class copied Москва — столица России into their books.
• Camille's French reader prints the first line of a new speaker as — Tu viens ? demanda Ana.

• Kabir translated माँ ने कहा — जल्दी आओ। as Mother said, 'Come quickly.'
• Meera's grandmother writes दिन-रात with a hyphen, and Meera translates it as day and night.
• Farhan's Russian homework reads Я студент, with no dash at all.
• Oliver's translation gives Marta's line as 'I'm coming,' said Marta, 'wait a moment.'
• Joyce's novels open speech with a dash, as in — Good morning, said the teacher.
• In Madrid, Lucía's grammar book calls the hyphen the guion and the long dash the raya.

Style guides compared

Every guide agrees on the Join or Break Test's first question: words joining into one number, age or describing idea take a hyphen. The disagreements begin where a house style decides the shape of the line.

So the Join or Break Test's third step, a dash spaced or closed by house style, covers the whole right-hand column: name the style, then keep it.

One sentence and one range set in four styles show the practical difference.

Two guides give the en dash one more job each.

Most readers never notice these; editors always do.

What never moves is the core. No guide writes twenty one as a number in words, a ten year old boy, or a brightly-lit room. No guide puts spaces round a hyphen inside a word. The guides argue only about the shape and spacing of the longer lines and the fate of a few prefixes.

Picture a railway line with one main track and several branch lines. The main track, hyphens in numbers, ages and describing pairs before a noun, carries every guide. The branch lines are the house styles: the Chicago line runs closed em dashes, the AP line runs spaced em dashes and hyphenated ranges, the British line runs spaced en dashes. A good writer knows which branch a piece is travelling on and keeps to its signals, without telling the next branch that its signals are wrong.

This section gathers house-style choices you met one at a time: Practice S16 (prefixes that close up), Craft S22 (co-operate and cooperate), Craft S23 and S24 (the en dash for ranges and connections), and Craft S26 (spaced or closed dashes). It also closes the loop from Chapter 18, where hyphenated words in title case were handed on to this chapter. S38 turns the comparison into exam judgement: which cases a careful item can key, and which it must leave alone.

Here is the hard case: two dash styles in the same document, both correct. Ananya writes an essay for a British university in its house style, which uses the spaced en dash for asides. The essay quotes a sentence from an American book, printed with a closed em dash round an aside. In Ananya's own paragraphs, every aside has spaces and a shorter line; in the quotation, the aside is closed up with the longer line. A quick reader sees two different dashes and circles one as an error. Both are right. Ananya's own prose follows the house style. The quotation follows the book it came from, because a quotation reproduces its source. Many publishers do regularise dashes inside quotations to their own style, and that is also a house decision; what matters is that the rule is applied the same way everywhere. Now change the guide. If the university asked for Chicago style, Ananya's own asides would need closed em dashes, and the spaced en dashes already typed would be slips against that guide, not because spaced en dashes are wrong, but because Chicago does not use them. The lesson is exact: judge a line against the guide the writer is following, and in the place where it appears. Without a named guide, a spaced en dash and a closed em dash are both standard. With one, the guide decides.

The best-known American guides do not agree with each other about ranges. Chicago and APA print pages 45 to 62 with an en dash. AP, the newsroom guide, does not use the en dash at all, so a newspaper following AP prints the same range with a hyphen. A student moving from a psychology essay to a student newspaper may need to change every range in the piece. A second surprise: the spaced en dash, the parenthetical dash of most British publishing, is the same character that Chicago and APA use for ranges. One line does two different jobs on the two sides of the Atlantic: an aside in London, a range in Chicago.

This section states only features the guides have held for several editions: the closed em dash in Chicago, APA and MLA; the spaced em dash in AP and its hyphen for ranges; the en dash for ranges in Chicago and APA; APA's en dash for equal pairs and its capitals on both parts of a hyphenated title word; American closing of most prefixes; AP's 2011 email. British practice is described as a tendency of most publishers, not a single guide, and some British publishers use the closed em dash. Guides are revised, so check the current edition. The names and sentences in the examples are invented.

1. Separate the core every guide shares from the edges where guides differ.
2. Before judging a dash, ask which guide the writer is following and whether the words are the writer's own or a quotation.
3. Know the main differences: spaced or closed dashes, en dash or hyphen in ranges, open or hyphenated prefixes, title case of hyphenated words.
4. State a named guide's rule only when you are sure; otherwise say some styles.
5. Choose one style for a piece and keep it for every dash, range and prefix.
6. Never let a house style override the core: no style writes twenty one or a ten year old boy.

• Dr Menon's notes cover pages 45–62.
• Tanvi's report – written for a British journal – is due in May.
• Arun's article—a study of monsoon floods—follows APA.
• The mayor — facing questions — spoke for two minutes.
• Oliver's chapter is titled A Guide to Self-Help Groups.
• In Nairobi, Wanjiru's newspaper prints the range as 2019-2024.

• Meera's college magazine writes co-operate; an American journal writes cooperate.
• Farhan interviewed a well-known poet from Shillong.
• The India–Sri Lanka series starts in March.
• The historian is well known in Leeds.
• Jack wrote about a newly built school.
• In Osaka, Kenji's company style sheet says email, not e-mail.

Hyphens and dashes under exam conditions

Every hyphen and dash item fits one of a few shapes. Each has its own first check.

The scan is the Join or Break Test in order: question one (words joining into a number, age, describing pair or prefix), question two (a range or connection), question three (a dash that breaks), question four (words that read clearly apart need no line).

Here are the three trays, with what goes into each.

Handwritten and typed answers need one habit each. By hand, write a hyphen short and tight between letters, and a dash clearly longer with a small gap on each side, so the marker can tell them apart. Typed, a plain hyphen for a range or a spaced hyphen for a dash is the normal keyboard stand-in, and careful online items do not penalise it unless they ask for print style. What loses marks in either medium is not a style; it is a slip: twenty one, a ten year old boy, a dash that never closes.

Picture three trays on an examiner's desk. The first is red and holds only the errors every style agrees on: twenty one, a ten year old boy, a brightly-lit room. The second is amber and has a label on it, formal print or a named guide; a line goes in only when the question writes that label. The third is green and holds everything already standard: co-operate, email, a spaced en dash, a two-lakh loan. Your job in each item is to pick up one line and put it in the right tray before you touch it.

This section turns the chapter's rules into exam judgement. It draws on Discover S2 and S4 (twenty-one, a seven-year-old), Practice S12 to S15 (before the noun, after the verb, no hyphen after -ly, ex-, self- and all-), Craft S23 (from and between with ranges) and S25 (the dash pair), and Master S34 and S37 (Indian English, and the guides compared). S39 moves from exam lines to literary ones: dashes read closely in public-domain texts.

Here is the hard case: a choose-the-correct-version item where two versions look right. Choose the correct sentence. (a) The Chennai to Kolkata train, running from 6 a.m.–9 p.m., was full. (b) The Chennai-Kolkata train, running from 6 a.m. to 9 p.m., was full. (c) The Chennai-Kolkata train, running from 6 a.m. to 9 p.m. was full. (d) The Chennai-Kolkata train — running from 6 a.m. to 9 p.m., was full. Many learners freeze between (a) and (b), because (a) seems to use the fancier mark. Run the trays. Version (d) opens an aside with a dash and closes it with a comma: tray one, out. Version (c) opens the aside with a comma and never closes it: tray one, out. Version (a) writes from followed by a dash, which is keyed wrong in formal print, the very register the fancier mark suggests. Version (b) joins Chennai and Kolkata with a hyphen where print would use an en dash. That is a tray three case: a hyphen for the connection is normal in newspapers and web text, and the stem names no print style. So (b) is the safest key. Notice why: not because a hyphen is better than an en dash for a route, but because (b) has no error that a careful item would key without a named style, while (a) breaks the from-to rule. The lesson is exact. When a question names no style, the right answer is the version with no tray-one error. A more formal-looking mark is not a reason to choose a version.

Many of the hyphens examiners key are not about dashes at all: they are about numbers and ages. Twenty one written without its hyphen, and a ten year old boy without its two, are among the most common hyphen errors in school writing, and they are wrong in every style guide in print. A student who checks every number in words and every age before a noun on the final read catches most of the errors that cost marks. A second surprise: the fanciest dash is often the trap. A version with an en dash after from looks more careful than one with the word to, and it is the one that is wrong.

Item types are described generically, in the style of school board papers and common competitive tests; no real paper is quoted or reproduced, and every item here is original. Boards, teachers and online platforms may set their own style for dashes and ranges; where one is set, follow it. The trays describe how careful items are written; a poorly written item may still key a both-standard form, and in that case answer the question as asked and raise the point with your teacher afterwards.

1. Read the stem first: does it name formal print, a printed report or a style guide?
2. Scan in order: numbers in words, ages and describing pairs before a noun, -ly words, prefixes, then every dash.
3. Sort what you find into three trays before you change anything.
4. Make the smallest correction that fixes the error, and leave standard forms alone.
5. Never correct Indian English compounds such as English-medium or two-lakh.
6. By hand, draw the dash clearly longer than the hyphen; typed, a hyphen stand-in is normal unless print is asked for.

• Kavya's corrected line reads: twenty-one volunteers joined the drive.
• The ten-year-old twins from Mysuru won the quiz.
• The newly painted hall in Kochi opens today.
• The Leeds–Manchester line reopens on Monday.
• The festival ran from 3 to 7 July.
• In Accra, Kofi's typed answer read: the team — tired but happy — flew home.

• Neha left the two-lakh loan in the passage exactly as written.
• An ex-serviceman from Jalandhar spoke first, Aditya wrote.
• The pre-Independence building in Chennai was restored.
• Two thirds of the class passed, Emily wrote.
• The coach is well known in Bristol.
• In Lima, Mateo's handwritten answer ended: we won - just.

Close reading dashes

When a published writer breaks a sentence with a dash, the break is evidence. Ask what it does.

This is the Join or Break Test turned into a reading tool: when a line breaks the sentence, ask what the break adds, interrupts or holds back.

Four questions open almost any passage.

Dashes of this kind are not only historical. A poet today can write 'The monsoon came, then a dash, then late, loud and all at once', and the dash makes the reader wait for the rush. The Join or Break Test calls that dash emphasis at the end; the poem uses it to make the rain arrive the way rain does.

Picture a line of text as a path through a garden. A comma is a small step; a full stop is a gate that closes. A dash is a place where the path simply stops at a low wall, and you have to look over it before you step across. Dickinson builds her poems out of such walls. Sterne makes some walls short and some long. Miss Bates talks as if she were hopping over one wall after another without looking back.

This section reads the chapter's rules backwards. S31 showed how the dashes grew in print, and here a printer's mark becomes a poet's method. Practice S18 and S19 set out the dash pair and the single dash before a final point; Craft S25 named the dash's three jobs, and Craft S28 showed the dash that breaks off speech. Here those jobs appear in Dickinson, Sterne and Austen. S40 asks you to use every rule and every reading on a text of your own.

Here is the hard case: a dash whose meaning cannot be settled. In editions that follow her manuscripts, Dickinson's Because I could not stop for Death ends its first two lines with dashes. One reader says the dashes are pauses: the speaker hesitates before each step toward death. Another says they are more like musical marks, showing rhythm rather than grammar. A third notes that her handwritten marks vary in length and angle, so printing them all as one kind of dash is already an editor's decision. A reader who insists on one meaning has a problem: the same mark appears in many poems doing different things, and the manuscripts themselves are not uniform. A reader who decides the dashes are meaningless habit has a different problem: why did her first editors think it necessary to remove so many of them, and why do the poems read so differently when they are gone? The careful reading holds both. The dashes are Dickinson's own marks, not a printer's, and they do not follow the grammar rules of prose. At the same time, they produce an effect a reader can describe: lines held open, thoughts left suspended, words weighed on their own. So a strong essay sentence says: 'In the manuscript-based text, the dashes that end the first two lines leave each thought unfinished, so the reader moves forward with the speaker in small, hesitant steps; early editions that replaced them with commas lose that hesitation.' It describes, it names the edition, and it never corrects.

Laurence Sterne's Tristram Shandy, published in volumes between 1759 and 1767, is famous for playing with the printed page. Its dashes come in noticeably different lengths, as if the pause itself were being measured. The same novel prints a completely black page to mourn a character's death. A dash, for Sterne, is not only punctuation; it is something to look at. A second surprise: Dickinson's first editors were not careless. They changed her dashes to make the poems acceptable to readers of the 1890s, and the book sold well. The poems most readers know today, with their dashes restored, are in a sense newer than the first printed versions.

Only public-domain texts are discussed: Emily Dickinson's poems, Laurence Sterne's Tristram Shandy and Jane Austen's Emma. Dickinson is quoted only in first lines and one word, and her dashes are described, because editions print her marks differently; check the edition set for your course. Sterne and Austen are described rather than quoted. Readings of effect are interpretations supported by the text, not claims about what the writers intended. The poems and stories by Meera, Farah, Rohan and the other named students are invented for this section.

1. Treat a published dash as evidence, never as an error to correct.
2. Quote dashes exactly and name the edition, especially for Dickinson.
3. Ask four questions: where the dash falls, single or pair, what is held back, and what a quieter mark would change.
4. Say what the dash does to the reader in this line; do not claim one meaning for every dash.
5. Describe the effect, not the writer's feelings: suggests, holds, interrupts.
6. Compare with a comma or full stop to show what the dash adds.

• Nani waited at the gate — the bus was late — and then the rain came.
• I meant to write to you — but the ink ran dry.
• "If only you had —" said Dadu, and the line went dead.
• Because I could not stop for Death –
• So very kind — and the tea — I was just saying — oh, the tea!
• In Santiago, Sofía's poem stops at the edge: and then — nothing.

• The monsoon came — late, loud, and all at once.
• the lamp, the letter — unopened — the dark
• Ishaan's essay: In Dickinson's second line of I'm Nobody! Who are you?, the dashes set Nobody apart.
• My father began — but my uncle — whistled.
• Emily's notes: the 1890s editors turned many of Dickinson's dashes into commas.
• In Oslo, Ingrid's story ends: the door opened — and there was no one.

Independent performance

Here are six lines from Zoya's draft, each put through the Join or Break Test and the Trailhead sheet.

Every decision is the Join or Break Test and one question more: is it wrong in every style, a choice the Trailhead sheet decides, or already standard?

The kinds of decision, with the smallest move for each.

Two traps sit in the draft on purpose. Grace's jokes were well known, after the verb, is standard; an editor who has just joined a two-day trek may be tempted to join well known too. And two thirds of the group, a fraction used as a noun, is standard open or hyphenated; an editor fresh from twenty-one may add a hyphen and call it a correction. Every line gets its own test.

Picture the editor at a desk with three trays and a pair of scissors. Into the red tray go the errors every style agrees on. Into the amber tray, labelled Trailhead, go the choices the magazine's sheet makes. The green tray holds everything already standard, untouched. The scissors are for the last paragraph: not to cut out anything wrong, but to trim the dashes a reader does not need, leaving the one that makes the ending land.

This is the chapter's capstone. It draws on Discover S2, S4 and S8 (number words, ages, the Join or Break Test), Practice S12 to S16 (before the noun, after the verb, -ly words, prefixes) and S18 to S19 (the dash pair and the single dash), Craft S23 to S26 and S29 to S30 (ranges, connections, the em dash, dash house styles, too many dashes, editing for a real reader), and Master S34, S37 and S38 (Indian English, the guides, exam trays). Chapter 20, Conciseness, takes the trimmed paragraph further.

Here is the hard case, and it sits in the last paragraph of the draft. Zoya writes three sentences about reaching the fort. The first has a dash before the view, the second has a dash pair round the name of a friend and another dash before the weather, and the third ends with a dash before the single word home. Five dashes, all correctly formed, all in the sheet's spaced en dash style. There is no grammar error to fix, and yet the sheet itself says no more than one dash, or one pair, in a sentence. The middle sentence breaks that line of the sheet, so one of its dashes must go. That is a fix the sheet decides. The other changes are judgement for the reader. Read aloud, the paragraph pants: every sentence stops, breaks and restarts. The strongest dash is the last one, before home, because that is the ending the whole report has walked toward. So the edit keeps that dash and quiets the rest. The view becomes a colon's job: we saw it all, the valley, the lake and the road back. The friend's name goes inside commas. The weather gets a sentence of its own. Then the last line keeps its single dash before home. The finished paragraph has one dash where it had five, and the one that is left is louder for it. A good editor's note is short: 'one dash cut to the sheet's limit; three quieted for the reader; the dash before home kept.' That is also the doorway to Chapter 20, which is about saying it in fewer words.

The hardest edit in this draft is not a correction at all. The five dashes of the last paragraph are all correctly formed, and a proofreader looking only for errors would pass them. A careful editor removes four of them anyway, and the paragraph becomes stronger, because the one dash left carries the whole ending. A second surprise: the edits that earn most marks are the smallest. Twenty-one, two-day and newly built are one mark each. Most hyphen errors in a real draft are a single missing or extra line.

Zoya Siddiqui, the classmates named in the report, the Trailhead magazine and its style sheet are invented for this section. The sheet's choices (spaced en dash, en dash in routes and ranges, co- words hyphenated, email closed) are one legitimate house style among several; under Chicago or AP some of those edits would go the other way. Trimming dashes is described as a judgement for a stated reader, not an error. Pune, Lonavala and Khandala are real places on the same route; no real event is described.

1. Read the style sheet first, and note what it decides and what it cannot.
2. Run the Join or Break Test on every number, age, describing pair, prefix, range and dash.
3. Sort each finding: wrong in every style, the sheet decides, or already standard.
4. Make the smallest change for each fix, and change nothing standard.
5. Trim dash overuse for the reader, keeping the one dash that earns its place.
6. Write a one-line defence for every change and every keep.

• Twenty-one students from our English-medium school set out at dawn.
• The Pune–Lonavala route took two days.
• We walked from 6 a.m. to 2 p.m. on the first day.
• Our guide – Mr Hughes, an ex-captain of the Scouts – knew every trail.
• By day two, Grace's jokes were well known.
• Baraka, our exchange student from Nairobi, carried the five-kilogram tent.

• My cousin-sister Mehak joined us at Khandala.
• Everyone agreed to co-operate on the cooking.
• Then, tired and happy, we turned for one place only – home.
• Two thirds of the group, Ruth counted, reached the fort by noon.
• Mr Hughes checked the quickly packed bags twice.
• Baraka called it the best – and the hardest – day of the year.