confidant
n. 知己；密友
复数 confidants
例句
He was their adviser, confidant and confessor.
他是他们的顾问、知己和倾诉对象。
《柯林斯英汉双解大词典》
It's common to have a "cubicle mate" or special confidant in a work setting.
在工作环境中，有一个“隔间伙伴”或特殊的知己是很常见的。
Share your anxieties with a confidant.
向你的密友倾诉你的焦虑。
