dirty linen

US /ˈdɜːr.t̬i ˈlɪn.ɪn/
UK /ˈdɜːr.t̬i ˈlɪn.ɪn/
"dirty linen" picture
1.

家丑, 私事

private and embarrassing matters that one would prefer to keep secret

:
They aired their dirty linen in public during the divorce proceedings.
他们在离婚诉讼中公开了他们的家丑
It's best not to discuss your family's dirty linen with strangers.
最好不要和陌生人讨论你家的家丑