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]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "exult":
   be proud of, boast, brag, caper, caracole, carol, celebrate, chirp,
   chirrup, clap hands, crow, crow over, dance, delight, exult in,
   frisk, frolic, gambol, gloat, gloat over, glory, glory in, joy,
   jubilate, lilt, make merry, rejoice, revel, rollick, romp,
   show off, sing, skip, skip for joy, take pride in, triumph,
   whistle