jubilant
1. [ adjective ] joyful and proud especially because of triumph or success
Synonyms: exultant triumphant rejoicing triumphal prideful exulting
Examples:

"rejoicing crowds filled the streets on VJ Day" "a triumphal success" "a triumphant shout"

Related terms: elated
2. [ adjective ] full of high-spirited delight
Synonyms: gleeful joyful elated
Related terms: joyous
Similar spelling:   jubilantly
  jubilancy
  jubilance