Source : Webster's Revised Unabridged Dictionary (1913)

Wittingly \Wit"ting*ly\, adv. [See {Wit}, v.]
   Knowingly; with knowledge; by design.

Source : WordNet®

wittingly
     adv : with full knowledge and deliberation; "he wittingly deleted
           the references" [syn: {knowingly}] [ant: {unwittingly},
            {unwittingly}]