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Adjective: jubilant  joo-bu-lunt
  1. Joyful and proud especially because of triumph or success
    "jubilant crowds filled the streets on VJ Day";
    - exultant, exulting, prideful, rejoicing, triumphal, triumphant
  2. Full of high-spirited delight
    "a jubilant heart";
    - elated, gleeful, joyful, cock-a-hoop [informal], gleesome [archaic], on top of the world [informal]

See also: elated, joyous

Encyclopedia: Jubilant