[1] : WordNet (r) 2.0

unappreciative
     adj : not feeling or expressing gratitude; "unappreciative of
           nature's bounty"

[2] : Moby Thesaurus II by Grady Ward, 1.0

26 moby thesaurus words for "unappreciative":
   against, con, disappointed, disapprobatory, disapproving,
   discontented, disenchanted, disgruntled, disillusioned, displeased,
   dissatisfied, dissenting, indignant, low, opposed, opposing, poor,
   thankless, turned-off, unapproving, uncomplimentary, unfavorable,
   ungrateful, unhappy, unmindful, unthankful

Unappreciative >> U Words
Unappreciative, definition of term: Unappreciative
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