The Collaborative International Dictionary of English v.0.48:
Mockingly \Mock"ing*ly\, adv. By way of derision; in a contemptuous or mocking manner. [1913 Webster]WordNet (r) 3.0 (2006):
mockingly adv 1: in a disrespectful jeering manner [syn: jeeringly, mockingly, gibingly] 2: in a disrespectful and mocking manner; "`Sorry,' she repeated derisively" [syn: derisively, scoffingly, derisorily, mockingly]