feeling or showing great happiness because of a success 喜气洋洋的；欢欣鼓舞的；欢呼雀跃的 The fans were in jubilant mood after the victory. 胜利后，球迷们欣喜若狂。
Oxford Collocations DictionaryJubilant is used with these nouns:- mood
Word Originmid 17th cent. (originally in the sense ‘making a joyful noise’): from Latin jubilant- ‘calling, hallooing’, from the verb jubilare, used by Christian writers to mean ‘shout for joy’.