Jubilant means extremely happy and pleased because something has gone well — a win, a good result, a piece of news you have waited for. It is bigger than “happy.” News writers like it for groups: jubilant fans, a jubilant crowd, a jubilant mood in the streets. In quiet everyday talk, people more often say “so happy” or “over the moon.” Jubilant sounds a little like a newspaper or a story. You can be glad about a nice meal; you are jubilant when the feeling bursts out. It comes from Latin iubilans, “shouting for joy,” which is why it still feels like cheering, not like a small private smile.

歡騰的、興高采烈的（因為成功、贏了）