jubilant (adj.)youdaoicibaDictYouDict[jubilant 词源字典]
1660s, from Latin jubilantem (nominative jubilans), present participle of jubilare "to call to someone," in Christian writers, "to shout for joy," related to jubilum "wild shout." First attested in Milton. Related: Jubilantly.[jubilant etymology, jubilant origin, 英语词源]