-nt adjective
Etymology: Latin jubilant-, jubilans, present participle of jubilare to jubilate
1. : making noises and demonstrations of joy or triumph
shots fired by jubilant cowboys in celebration of frontier legal victories — American Guide Series: Texas
2. : manifesting or expressing exultation or gladness
jubilant strings and ceremonious percussion — Irving Kolodin
the walls … were covered with jubilant childish drawings — Oliver La Farge
• ju·bi·lant·ly adverb