unsocial

from WordNet (r) 3.0 (2006)

unsocial
    adj 1: not seeking or given to association; being or living
           without companions; "the unsocial disposition to neglect
           one's neighbors" [ant: {social}]

from The Collaborative International Dictionary of English v.0.48

Unsocial \Unsocial\
   See {social}.

from Moby Thesaurus II by Grady Ward, 1.0

42 Moby Thesaurus words for "unsocial":
      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      unfriendly, ungenial, unsociable, withdrawn