The Collaborative International Dictionary of English v.0.48:
Derisive \De*ri"sive\, a. Expressing, serving for, or characterized by, derision. "Derisive taunts." --Pope. -- De*ri"sive*ly, adv. -- De*ri"sive*ness, n. [1913 Webster]WordNet (r) 3.0 (2006):
derisively adv 1: in a disrespectful and mocking manner; "`Sorry,' she repeated derisively" [syn: derisively, scoffingly, derisorily, mockingly]