Source : Webster's Revised Unabridged Dictionary (1913)

Exulting \Ex*ult"ing\, a.
   Rejoicing triumphantly or exceedingly; exultant. --
   {Ex*ult"ing*ly}, adv.

Source : WordNet®

exultingly
     adv : in an exultant manner; "it was exultingly easy" [syn: {exultantly}]