disgruntle

from WordNet (r) 3.0 (2006)
disgruntle
    v 1: put into a bad mood or into bad humour; "The employees were
         disgruntled by their bad working conditions"
from The Collaborative International Dictionary of English v.0.48
Disgruntle \Dis*grun"tle\, v. t.
   To dissatisfy; to disaffect; to anger. [Colloq.]
   [1913 Webster]
antiflux / dictionary / disgruntle
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