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banzai; hurray; hurrah; hooray
something to cheer about; something worthy of celebration
giving up; throwing one's hands up
eternal life and prosperity
優勝が決まって嬉しくて万歳と叫んだ。
When we won the championship, we shouted banzai.
皆で万歳三唱をして祝福しましたね。
We all gave three cheers of banzai.
合格の知らせに思わず万歳をしてしまった。
I cheered banzai at the news of passing.