in someone's debt

Very grateful for something (a favor) that someone has done for one.

Japanese Meaning

恩に着る / 借りがある / 心から感謝している

After she pulled me from the sinking car, I knew I would always be in someone's debt.

彼女が沈みかけた車から私を助け出してくれた後、私は彼女に永遠に恩義を感じた。

Sense（1）

Very grateful for something (a favor) that someone has done for one.

You never wanted my friendship and you were afraid to be in my debt.