知己 (zhī jǐ): Bosom friend / confidant (Adjective, Noun) — Meaning & Stroke Order

He is my confidant.

He appears to have many friends, but in reality, he doesn't even have a single confidant to confide in.

On the weekend, a few of us confidants gathered together to enjoy tea, chat, and share updates about each other's lives.

In the journey of life, meeting a true confidant is a great fortune.

Although our personalities are vastly different, after years of adjustment, we eventually became bosom friends who share everything.