Source : Webster's Revised Unabridged Dictionary (1913)

Derogative \De*rog"a*tive\, a.
   Derogatory. -- {De*rog"a*tive*ly}, adv. [R.] --Sir T. Browne.

Source : WordNet®

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