noun, noun or participle which takes 'suru'
repaying a kindness; gratitude
Refers to the act of returning a favor or showing gratitude for past kindness. Often used in formal or literary contexts.
彼は恩師に報恩の気持ちを込めて手紙を書いた。
He wrote a letter to his former teacher expressing his gratitude.
報恩のために、彼女はボランティア活動に参加した。
To repay a kindness, she participated in volunteer activities.