大だい恩おん人じん

noun

great benefactor; person to whom one is greatly indebted

Refers to someone who has provided significant help or support, often in a life-changing way. Carries a strong sense of gratitude.

• 彼かれは私わたしの大だい恩おん人じんです。

  He is my great benefactor.

• 大だい恩おん人じんに感かん謝しゃの手て紙がみを書かいた。

  I wrote a letter of thanks to the person to whom I am greatly indebted.