Synonyms of the word

unsocial

• adj. Not social.
• adj. Inhospitable.

alone

• adj. By oneself, solitary.
• adj. Apart from, or exclusive of, others.
• adj. Considered separately.
• adj. Without equal.
• adj. (obsolete) Unique; rare; matchless.
• adv. By oneself; apart from, or exclusive of, others; solo.
• adv. Without outside help.
• adv. Exclusively.

antisocial

• adj. Unwilling or unable to cooperate and associate normally with other people.
• adj. Antagonistic, hostile, or unfriendly toward others; menacing.
• adj. Opposed to social order or the principles of society; hostile toward society.
• n. An antisocial individual.

asocial

• adj. not social.
• adj. not sociable.
• adj. (perhaps colloquial, sometimes proscribed) antisocial.

lone

• adj. Solitary; having no companion.
• adj. Isolated or lonely; lacking companionship.
• adj. Sole; being the only one of a type.
• adj. Situated by itself or by oneself, with no neighbours.
• adj. (archaic) Unfrequented by human beings; solitary.
• adj. (archaic) Single; unmarried, or in widowhood.

lonely

• adj. Unhappy because of feeling isolated from contact with other people.
• adj. (of a place or time) Unfrequented by people; desolate.
• adj. (of a person) Without companions; solitary.

recluse

• adj. (now rare) Sequestered; secluded, isolated.
• adj. (now rare) Hidden, secret.
• n. A person who lives in self-imposed isolation or seclusion from the world, especially for religious purposes;…
• n. (obsolete) The place where a recluse dwells; a place of isolation or seclusion.
• n. (US) A brown recluse spider.
• v. (obsolete) To shut; to seclude.

reclusive

• adj. Of, characterized by, or preferring privacy and isolation; secluded.

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.

unsociable

• adj. not needing the company of others.
• adj. not congenial or compatible.
• adj. unfriendly.

withdrawn

• adj. removed from circulation.
• adj. introverted; not inclined to interact with other people.
• v. past participle of withdraw.