(countable) One who lives alone, or in solitude; an anchorite, hermit or recluse.

(uncountable) Solitary confinement.

(uncountable) The state of being solitary; solitude

(archaic) The Rodrigues solitaire (Pezophaps solitaria), an extinct flightless bird.

Living or being by oneself; alone; having no companion present

Performed, passed, or endured alone

Not much visited or frequented; remote from society

Not inhabited or occupied; without signs of inhabitants or occupation; desolate; deserted

gloomy; dismal, because of not being inhabited.

Single; individual; sole.

(botany) Not associated with others of the same kind.