| noun | indecision in speech or action |
| noun | the quality of being unsteady and subject to changes “he kept a record of price fluctuations” |
| verb | pause or hold back in uncertainty or unwillingness “Authorities hesitate to quote exact figures” |
| verb | be unsure or weak “Their enthusiasm is faltering” |
| verb | move hesitatingly, as if about to give way |
| verb | move or sway in a rising and falling or wavelike pattern “the line on the monitor vacillated” |
| verb | move back and forth very rapidly “the candle flickered” |
| verb | sway to and fro |
| verb | give off unsteady sounds, alternating in amplitude or frequency |
| adjective | uncertain in purpose or action |
| hesitate | verb | pause or hold back in uncertainty or unwillingness |
| vacillate | verb | be undecided about something; waver between conflicting positions or courses of action |
| waver | verb | pause or hold back in uncertainty or unwillingness |
| fluctuate | verb | be unstable |
| hesitant | adjective | lacking decisiveness of character; unable to act or decide quickly or firmly |
| hesitation | noun | indecision in speech or action |
| hesitater | noun | one who hesitates (usually out of fear) |
| hesitancy | noun | a certain degree of unwillingness |
| hesitator | noun | one who hesitates (usually out of fear) |
| waver | noun | the act of pausing uncertainly |
| waverer | noun | one who hesitates (usually out of fear) |
| wavering | noun | indecision in speech or action |
| waffler | noun | someone who speaks or writes in a vague and evasive manner |
| faltering | noun | the act of pausing uncertainly |
| fluctuation | noun | a wave motion |
| vacillation | noun | changing location by moving back and forth |
| flicker | noun | the act of moving back and forth |
| flutter | noun | the act of moving back and forth |
| fluttering | noun | the motion made by flapping up and down |
| quaver | noun | a tremulous sound |