unsociable (adj.)

• aloof
• antisocial
• autistic
• bashful
• chilly
• close
• cold
• cool
• cynical
• dissociable
• distant
• frosty
• icy
• incompatible
• inhospitable
• inimical
• meaningless
• misogynous
• morose
• nongregarious
• offish
• reserved
• secretive
• self-contained
• self-sufficient
• sexist
• shut-in
• snug
• solitary
• standoffish
• strained
• sullen
• tense
• timid
• uncommunicative
• uncongenial
• uncordial
• unfriendly
• unharmonious
• unsocial