unimpressed

from WordNet (r) 3.0 (2006)

unimpressed
    adj 1: not moved to serious regard; "trying to appear
           unimpressed"

from The Collaborative International Dictionary of English v.0.48

Unimpressed \Unimpressed\
   See {impressed}.

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "unimpressed":
      aweless, calm, composed, cool, expected, expecting, inexcitable,
      unaffected, unamazed, unanimated, unastonished, unastounded,
      unawed, unbewildered, undazed, undazzled, undumbfounded,
      uninspired, unmarveling, unmoved, unruffled, unstirred, unstruck,
      unsurprised, untouched, unwondering, wonderless