unmarked

from WordNet (r) 3.0 (2006)

unmarked
    adj 1: not having an identifying mark; "unmarked cards"; "an
           unmarked police car" [ant: {marked}]
    2: not taken into account; "his retirement was not allowed to go
       unmarked" [syn: {overlooked}, {unmarked}, {unnoted}]

from The Collaborative International Dictionary of English v.0.48

Unmarked \Unmarked\
   See {marked}.

from Moby Thesaurus II by Grady Ward, 1.0

45 Moby Thesaurus words for "unmarked":
      bright, fresh, harmless, inviolate, mint, pristine, scatheless,
      unbroken, unbruised, unconsidered, undamaged, undefaced,
      undeformed, undemolished, undescried, undestroyed, unfaded,
      unharmed, unheeded, unhurt, unimpaired, uninjured, unmaimed,
      unmangled, unmarred, unminded, unmissed, unnoted, unnoticed,
      unobserved, unperceived, unregarded, unremarked, unscarred,
      unscathed, unscratched, unseen, unshattered, unspoiled,
      unthought-of, untorn, untouched, unwithered, unworn, virgin