The Collaborative International Dictionary of English v.0.48:

Dispraise \Dis*praise"\, v. t. [imp. & p. p. Dispraised; p.
   pr. & vb. n. Dispraising.] [OE. dispreisen, OF. desprisier,
   despreisier, F. d['e]priser; pref. des- (L. dis-) + prisier,
   F. priser, to prize, praise. See Praise, and cf.
   Disprize, Depreciate.]
   To withdraw praise from; to notice with disapprobation or
   some degree of censure; to disparage; to blame.
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         Dispraising the power of his adversaries. --Chaucer.
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         I dispraised him before the wicked, that the wicked
         might not fall in love with him.         --Shak.
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