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to act (a part); to play (a role)
to perform (a play, etc.); to put on (a production)
to commit (a blunder); to pretend (e.g. to be a good father); to disgrace oneself
舞台で悪役を演ずることに初めて挑戦した。
For the first time, he took on the challenge of playing a villain on stage.
古典劇を演ずることになりました。
I will perform in a classical play.
彼女はその舞台で主人公の役を演じた。
She played the role of the protagonist in that stage production.