Source : Webster's Revised Unabridged Dictionary (1913)

Disobediently \Dis`o*be"di*ent*ly\, adv.
   In a disobedient manner.

Source : WordNet®

disobediently
     adv : in a disobedient manner; "he went ahead disobediently and
           did what his superviser had warned him not to do" [ant:
            {obediently}]