expression, ichidan verb
feel indebted; feel grateful; be much obliged
Expresses a sense of personal indebtedness for a favor received. Often used when acknowledging someone's kindness or help.
ご親切に恩に着ます。
I'm very grateful for your kindness.
彼には助けてもらって恩に着ている。
I feel indebted to him for helping me.