The Collaborative International Dictionary of English v.0.48:

Unregarded \Unregarded\
   See regarded.

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "unregarded":
   abandoned, deserted, disregarded, half-done, ignored, laid aside,
   left undone, missed, neglected, omitted, overlooked, passed by,
   passed over, passed up, pigeonholed, put aside, shunted, sidelined,
   sidetracked, slighted, unasked, unattended to, uncared-for,
   unchaperoned, unconsidered, undescried, undone, unenvied, unheeded,
   unhonored, unmarked, unminded, unmissed, unnoted, unnoticed,
   unobserved, unperceived, unremarked, unrespected, unrevered,
   unseen, unsolicited, untended, unthought-of, unvenerated,
   unwatched