Jubilant means bursting with joy after a win. Arms up, strangers hugging, noise everywhere.
It is a public and rather loud sort of happiness, which is why sport and politics use it so heavily: jubilant fans, a jubilant crowd outside the town hall, a jubilant text message at midnight. Quiet contentment is never jubilant. The noun jubilation names the scene rather than the feeling, and the same root gives us jubilee, a celebration of a long reign or a long marriage. The word wants a reason and a moment — you are jubilant about something, and rarely for long.
1adjectivejubilantShowing great happiness, especially after a success.
“Jubilant supporters filled the square.”
synonyms: elated, triumphant
From Latin iubilans ("shouting for joy").
Etymology from Wiktionary, CC BY-SA