Synonyms of the word

nongregarious

• adj. (zoology) Not gregarious; solitary. Compare ungregarious.

nonsocial

• adj. Not social; unconcerned with society or social matters.

solitary

• n. One who lives alone, or in solitude; an anchoret, hermit or recluse.
• n. (uncountable) solitary confinement.
• adj. Living or being by oneself; alone; having no companion present; being without associates.
• adj. Performed, passed, or endured alone; as, a solitary journey; a solitary life.
• adj. Not much visited or frequented; remote from society; retired.
• adj. Not inhabited or occupied; without signs of inhabitants or occupation; desolate; deserted; silent; still;…
• adj. Single; individual; sole.
• adj. (botany) Not associated with others of the same kind.
• n. (archaic) The Rodrigues solitaire (Pezophaps solitaria), an extinct flightless bird.

ungregarious

• adj. (of a person) Not gregarious; unsociable.