If you were the quarterback who threw the touchdown pass that won the Super Bowl, you would be jubilant: filled with joy. When you feel jubilant, you're full of extreme happiness. Usually, people are jubilant after great victories, whether in sports, politics, or life. When you're jubilant, it's a moment of extreme happiness, like giving birth or watching a child graduate. There can also be jubilant songs, jubilant performances, and even jubilant periods in history, times when people are especially proud and filled with triumph.

Source: Vocabulary