| noun | confinement of a prisoner in isolation from other prisoners “he was held in solitary” |
| noun | one who lives in solitude |
| adjective | characterized by or preferring solitude “a lone wolf” |
| adjective | of plants and animals; not growing or living in groups or colonies “solitary bees” |
| adjective | lacking companions or companionship “he was alone when we met him” |
| adjective | being the only one; single and isolated from others “the lone doctor in the entire county” |
| adjective | devoid of creatures “a lonely crossroads” |
| hermitic | adjective | characterized by ascetic solitude |
| hermitical | adjective | characterized by ascetic solitude |
| recluse | adjective | withdrawn from society; seeking solitude |
| solitary | adjective | characterized by or preferring solitude |
| loneliness | noun | a disposition toward being alone |
| solitary | noun | one who lives in solitude |
| solitariness | noun | a disposition toward being alone |
| aloneness | noun | a disposition toward being alone |
| lonesomeness | noun | a disposition toward being alone |