Source : Webster's Revised Unabridged Dictionary (1913)

Disparage \Dis*par"age\ (?; 48), v. t. [imp. & p. p.
   {Disparaged}; p. pr. & vb. n. {Disparaging}.] [OF.
   desparagier, F. d['e]parager, to marry unequally; pref. des-
   (L. dis-) + F. parage extraction, lineage, from L. par equal,
   peer. See {Peer}.]
   1. To match unequally; to degrade or dishonor by an unequal
      marriage. [Obs.]

            Alas! that any of my nation Should ever so foul
            disparaged be.                        --Chaucer.

   2. To dishonor by a comparison with what is inferior; to
      lower in rank or estimation by actions or words; to speak
      slightingly of; to depreciate; to undervalue.

            Those forbidding appearances which sometimes
            disparage the actions of men sincerely pious. --Bp.
                                                  Atterbury.

            Thou durst not thus disparage glorious arms.
                                                  --Milton.

   Syn: To decry; depreciate; undervalue; underrate; cheapen;
        vilify; reproach; detract from; derogate from; degrade;
        debase. See {Decry}.

Source : WordNet®

disparaging
     adj : expressive of low opinion; "derogatory comments";
           "disparaging remarks about the new house" [syn: {derogative},
            {derogatory}]