Nouns

(n)rejoicinga feeling of great happiness
(n)exultation, rejoicing, jubilationthe utterance of sounds expressing great joy

Adjectives

(s)exultant, exulting, jubilant, prideful, rejoicing, triumphal, triumphantjoyful and proud especially because of triumph or success“rejoicing crowds filled the streets on VJ Day”, “a triumphal success”, “a triumphant shout”