unpopular

from WordNet (r) 3.0 (2006)

unpopular
    adj 1: regarded with disfavor or lacking general approval;
           "unpopular ideas"; "an unpopular war" [ant: {popular}]

from The Collaborative International Dictionary of English v.0.48

Unpopular \Unpopular\
   See {popular}.

from Moby Thesaurus II by Grady Ward, 1.0

47 Moby Thesaurus words for "unpopular":
      avoided, despised, disliked, friendless, ignored, ignotus,
      in bad odor, inglorious, little known, lowly, misprized,
      misunderstood, nameless, no credit to, obscure, out of favor,
      rejected, renownless, shunned, snubbed, thankless, unaccepted,
      unappreciated, uncared-for, uncelebrated, undesirable,
      undistinguished, unfamed, unglorified, unheard-of, unhonored,
      unknown, unlamented, unliked, unloved, unmissed, unmourned,
      unnotable, unnoted, unnoticed, unregretted, unremarked, unrenowned,
      unsung, unvalued, unwanted, unwelcome