jubilant
JOO-buh-luntadjMeaning joyful and triumphant, especially after a success
Memory hook JUBIL-ANTS: the Ants won the cup!. The Ants, the smallest team in the league, just won the cup, and every player is leaping and cheering. They are jubilant.
The jubilant fans poured onto the field after the final whistle.
In context The mood in the gym was jubilant: the team had just won its first championship in forty years, and nobody wanted to go home.
Similar triumphant, exultant, joyful, overjoyed
Opposite dejected, despondent, defeated
From Latin jubilare, “to shout for joy.”