Source : Webster's Revised Unabridged Dictionary (1913)

Mockingly \Mock"ing*ly\, adv.
   By way of derision; in a contemptuous or mocking manner.

Source : WordNet®

mockingly
     adv 1: in a disrespectful jeering manner [syn: {jeeringly}, {gibingly}]
     2: in a disrespectful and mocking manner; "`Sorry,' she
        repeated derisively" [syn: {derisively}, {scoffingly}, {derisorily}]