心しん腹ぷく

noun

chest and stomach; one's innermost being

Literally refers to the chest and stomach area; figuratively, it means the depths of one's heart or true feelings. Often used in literary or formal contexts.

• 彼かれの言こと葉ばは私わたしの心しん腹ぷくに響ひびいた。

  His words resonated deep within me.

• 心しん腹ぷくを打うち明あけて話はなし合あった。

  We opened up our innermost feelings and talked.