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to encourage; to cheer
試合前、キャプテンはチームメイトを勇気付けた。
Before the match, the captain encouraged his teammates.
先生が試験で悩む生徒を勇気付けてくれた。
The teacher cheered up the student who was struggling with exams.
音楽は人を勇気付ける力がある。
Music has the power to encourage people.