Noun

• S: (n) solitary confinement (solitary_confinement%1:26:00::), solitary (solitary%1:26:00::) (confinement of a prisoner in isolation from other prisoners) "he was held in solitary"
• S: (n) hermit (hermit%1:18:00::), recluse (recluse%1:18:00::), solitary (solitary%1:18:00::), solitudinarian (solitudinarian%1:18:00::), troglodyte (troglodyte%1:18:01::) (one who lives in solitude)

Adjective

• S: (adj) lone (lone%3:00:00:unsocial:00), lonely (lonely%3:00:01:unsocial:00), solitary (solitary%3:00:01:unsocial:00) (characterized by or preferring solitude) "a lone wolf"; "a lonely existence"; "a man of a solitary disposition"; "a solitary walk"
• S: (adj) nongregarious (nongregarious%3:00:00:ungregarious:00), nonsocial (nonsocial%3:00:00:ungregarious:00), solitary (solitary%3:00:00:ungregarious:00) (of plants and animals; not growing or living in groups or colonies) "solitary bees"
• S: (adj) alone (alone%3:00:00:unaccompanied:00), lone (lone%3:00:00:unaccompanied:00), lonely (lonely%3:00:00:unaccompanied:00), solitary (solitary%3:00:00:unaccompanied:00) (lacking companions or companionship) "he was alone when we met him"; "she is alone much of the time"; "the lone skier on the mountain"; "a lonely fisherman stood on a tuft of gravel"; "a lonely soul"; "a solitary traveler"
• S: (adj) lone (lone%3:00:00:single:05), lonesome (lonesome%3:00:00:single:05), only (only%3:00:00:single:05), sole (sole%3:00:00:single:05), solitary (solitary%3:00:00:single:05) (being the only one; single and isolated from others) "the lone doctor in the entire county"; "a lonesome pine"; "an only child"; "the sole heir"; "the sole example"; "a solitary instance of cowardice"; "a solitary speck in the sky"
• S: (adj) lonely (lonely%3:00:00:uninhabited:00), solitary (solitary%3:00:00:uninhabited:00), unfrequented (unfrequented%3:00:00:uninhabited:00) (devoid of creatures) "a lonely crossroads"; "a solitary retreat"; "a trail leading to an unfrequented lake"