心しん友ゆう

noun

bosom friend; close friend; intimate friend

A formal or literary term for a very close, trusted friend; carries a slightly elevated, heartfelt tone compared to 親友.

• 彼かれは私わたしの心しん友ゆうであり、何なんでも話はなせる存そん在ざいだ。

  He is my bosom friend, someone I can talk to about anything.

• 心しん友ゆうとの絆きずなは、時じ間かんが経たっても変かわらない。

  The bond with a close friend remains unchanged over time.