Synonyms for Rejoicing (same or very similar meaning)
WordNet sense 1 (the utterance of sounds expressing great joy):
exultation, jubilationWordNet sense 2 (joyful and proud especially because of triumph or success):
exultant, jubilant, prideful, triumphal, triumphant, exultingWordNet sense 3 (exultantly proud and joyful; in high spirits):
elatedFrom the ODE community, based on WordNetadd/edit