Definition of jubilant adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdʒuːbɪlənt//
; NAmE NAmE//ˈdʒuːbɪlənt//
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feeling or showing great happiness because of a success The fans were in jubilant mood after the victory. 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’.
See the Oxford Advanced American Dictionary entry: jubilant