[syn: exultant, exulting, jubilant, prideful, rejoicing, triumphal, triumphant]
The Collaborative International Dictionary of English v.0.48:
Rejoicing \Re*joi"cing\ (-s?ng), n.
   1. Joy; gladness; delight.
      [1913 Webster]
            We should particularly express our rejoicing by love
            and charity to our neighbors.         --R. Nelson.
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   2. The expression of joy or gladness.
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            The voice of rejoicing and salvation is in the
            tabernacles of the righteous.         --Ps. cxviii.
                                                  15.
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   3. That which causes to rejoice; occasion of joy.
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            Thy testimonies have I taken as an heritage forever,
            for they are the rejoicing of my heart. --Ps. cxix.
                                                  111.
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The Collaborative International Dictionary of English v.0.48:
Rejoice \Re*joice"\ (r[-e]*jois"), v. i. [imp. & p. p.
   Rejoiced (-joist"); p. pr. & vb. n. Rejoicing
   (-joi"s?ng).] [OE. rejoissen, OF. resjouir, resjoir, F.
   r['e]jouir; pref. re- re- + OF. esjouir, esjoir, F.
   ['e]jouir, to rejoice; pref. es- (L. ex-) + OF. jouir, joir,
   F. jouir, from L. gaudere to rejoice. See Joy.]
   To feel joy; to experience gladness in a high degree; to have
   pleasurable satisfaction; to be delighted. "O, rejoice beyond
   a common joy." --Shak.
   [1913 Webster]
         I will be glad and rejoice in thy mercy. --Ps. xxxi. 7.
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   Syn: Syn. To delight; joy; exult; triumph.
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WordNet (r) 3.0 (2006):
rejoicing
    adj 1: joyful and proud especially because of triumph or
           success; "rejoicing crowds filled the streets on VJ Day";
           "a triumphal success"; "a triumphant shout" [syn:
           exultant, exulting, jubilant, prideful,
           rejoicing, triumphal, triumphant]
    n 1: a feeling of great happiness
    2: the utterance of sounds expressing great joy [syn:
       exultation, rejoicing, jubilation]
Moby Thesaurus II by Grady Ward, 1.0:
54 Moby Thesaurus words for "rejoicing":
   anniversaries, buxom, celebrating, celebration, ceremony,
   commemoration, delighting, dressing ship, elate, elated, exultant,
   exulting, fanfare, fanfaronade, festivity, flourish of trumpets,
   flushed, frivolous, gleeful, hilarious, holiday, jocular, jocund,
   jolly, jovial, joyful, joyous, jubilant, jubilee, laughter-loving,
   marking the occasion, memorialization, memory, merry, mirth-loving,
   mirthful, observance, ovation, religious rites, remembrance, revel,
   risible, rite, ritual observance, salute, salvo, solemn observance,
   solemnization, testimonial, testimonial banquet,
   testimonial dinner, toast, tribute, triumph