The Collaborative International Dictionary of English v.0.48:

Exult \Ex*ult"\, v. i. [imp. & p. p. Exulted; p. pr. & vb. n.
   Exulting.] [L. exultare, exsultare, exultatum, exsultatum,
   to leap vigorously, to exult, intens. fr. exsilire to spring
   out or up; ex out + salire to spring, leap: cf. F. exulter.
   See Salient.]
   To be in high spirits; figuratively, to leap for joy; to
   rejoice in triumph or exceedingly; to triumph; as, an
   exulting heart. "An exulting countenance." --Bancroft.
   [1913 Webster]

         The dumb shall sing, the lame his crutch forego,
         And leap exulting like the bounding roe. --Pope.
   Exultance

WordNet (r) 3.0 (2006):

exult
    v 1: feel extreme happiness or elation [syn: exult, walk on
         air, be on cloud nine, jump for joy]
    2: to express great joy; "Who cannot exult in Spring?" [syn:
       exuberate, exult, rejoice, triumph, jubilate]