unsung

from WordNet (r) 3.0 (2006)

unsung
    adj 1: not famous or acclaimed; "an obscure family"; "unsung
           heroes of the war" [syn: {obscure}, {unknown}, {unsung}]
    2: having value that is not acknowledged [syn: {unappreciated},
       {unsung}, {unvalued}]

from The Collaborative International Dictionary of English v.0.48

Unsung \Unsung\
   See {sung}.

from Moby Thesaurus II by Grady Ward, 1.0

56 Moby Thesaurus words for "unsung":
      anonymous, despised, disliked, disregarded, ignotus, inconspicuous,
      inglorious, insignificant, little known, lowly, misprized,
      misunderstood, nameless, no credit to, obscure, out of favor,
      renownless, silent, thankless, unappreciated, uncared-for,
      uncelebrated, undeclared, undistinguished, unexpressed, unfamed,
      unglorified, unheard-of, unhonored, unidentified, unknown,
      unlamented, unmentioned, unmissed, unmourned, unnotable, unnoted,
      unnoticed, unpopular, unproclaimed, unpronounced, unpublished,
      unrecognized, unrecorded, unregretted, unremarked, unrenowned,
      unsaid, unspoken, untalked-of, untold, unuttered, unvalued,
      unvoiced, unwritten, wordless