The Collaborative International Dictionary of English v.0.48:

Undamaged \Undamaged\
   See damaged.

WordNet (r) 3.0 (2006):

undamaged
    adj 1: not harmed or spoiled; sound [ant: damaged]

Moby Thesaurus II by Grady Ward, 1.0:

44 Moby Thesaurus words for "undamaged":
   bright, flawless, fresh, harmless, immune, immunized, insured,
   intact, inviolate, mint, pristine, protected, safe, safe and sound,
   scatheless, secure, sound, unblemished, unbroken, unbruised,
   undefaced, undeformed, undemolished, undestroyed, unfaded,
   unharmed, unhurt, unimpaired, uninjured, unmaimed, unmangled,
   unmarked, unmarred, unscarred, unscathed, unscratched, unshattered,
   unspoiled, unthreatened, untorn, untouched, unwithered, unworn,
   virgin