Synonyms and related words :
aloof, anchoretic, anchoritic, antisocial, autistic, bashful, chilly, close, cold, cool, detached, dissociable, distant, hermitical, hostile, incompatible, inhospitable, insociable, misanthropic, mopey, mopish, morose, nongregarious, reclusive, reserved, retiring, self-contained, self-sufficient, snug, socially incompatible, solitary, standoffish, sullen, unamiable, unclubbable, uncommunicative, uncompanionable, uncongenial, unfriendly, ungenial, unsociable, withdrawn