wash your dirty linen/laundry (also air your dirty laundry American English) to discuss something embarrassing or bad about yourself where everyone can see, know, or hear 把丑事外扬,使丑事公开 The divorce has meant airing their dirty laundry in court. 离婚意味着要在法庭上公开他们的家丑。
→ wash your dirty linen/laundry at dirty1(4)