The DICT Development Group

  Unfamiliar \Unfamiliar\
     See familiar.

  unfamiliar
      adj 1: not known or well known; "a name unfamiliar to most"; "be
             alert at night especially in unfamiliar surroundings"
             [ant: familiar]

  109 Moby Thesaurus words for "unfamiliar":
     able, awkward, bizarre, blankminded, breakaway, callow, curious,
     different, dumb, empty, empty-headed, enigmatic, exotic, foreign,
     gauche, green, groping, ignorant, inane, incalculable,
     incognizable, incognizant, inexperienced, innocent, know-nothing,
     mysterious, naive, nescient, new, novel, oblivious, odd, offbeat,
     original, peculiar, puzzling, rare, raw, recherche, remarkable,
     sealed, simple, strange, strange to, sui generis, tentative,
     unaccustomed, unaccustomed to, unacquainted, unacquainted with,
     unapparent, unapprehended, unapprized, unascertained, unaware,
     unbeknown, uncharted, unclassified, uncommon, uncomprehending,
     unconventional, unconversant, unconversant with, uncustomary,
     undisclosed, undiscoverable, undiscovered, undivulged,
     undreamed-of, unenlightened, unexpected, unexplained, unexplored,
     unexposed, unfamiliar with, unfathomed, unheard, unheard-of,
     unidentified, unilluminated, uninformed, uninitiated,
     uninitiated in, uninstructed, unintelligent, uninvestigated,
     unique, unknowable, unknowing, unknown, unordinary, unperceived,
     unplumbed, unposted, unrevealed, unripe, unskilled in, unsure,
     unsuspected, unthought-of, untouched, unused to, unusual, unversed,
     unversed in, unwitting, unwonted, vacuous, virgin