Entry 1 sense Webster, 1913 Jubilant /jo͞ob'-əl-ənt/ · Ju·bi·lant · IPA /ˈd͡ʒu.bə.lənt/ 01 a. Uttering songs of triumph; shouting with joy; triumphant; exulting. 1. Uttering songs of triumph; shouting with joy; triumphant; exulting. “While the bright pomp ascended jubilant.” — Milton.