The Collaborative International Dictionary of English v.0.48:

Unnoted \Unnoted\
   See noted.

WordNet (r) 3.0 (2006):

unnoted
    adj 1: not taken into account; "his retirement was not allowed
           to go unmarked" [syn: overlooked, unmarked,
           unnoted]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "unnoted":
   ignotus, inglorious, little known, nameless, no credit to, obscure,
   renownless, uncelebrated, unconsidered, undescried,
   undistinguished, unfamed, unglorified, unheard-of, unheeded,
   unhonored, unknown, unmarked, unminded, unmissed, unnotable,
   unnoticed, unobserved, unperceived, unpopular, unregarded,
   unremarked, unrenowned, unseen, unsung, unthought-of