大活躍
Noun
Irregular
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
See also:
活躍 (かつやく)
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.