だいかつやく

  1. noun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

    being very active, being very useful, playing a very active part, making a spectacular showing, great efforts, splendid work

    • 2人とも今日は大活躍だったみたいね。先生も鼻が高いわ。
      You've both been very impressive today. I'm proud of you.