dirty linen
US /ˈdɜːr.t̬i ˈlɪn.ɪn/
UK /ˈdɜːr.t̬i ˈlɪn.ɪn/

1.
内輪の恥, 隠しておきたい個人的な事柄
private and embarrassing matters that one would prefer to keep secret
:
•
They aired their dirty linen in public during the divorce proceedings.
彼らは離婚訴訟中に内輪の恥を公衆の面前でさらした。
•
It's best not to discuss your family's dirty linen with strangers.
家族の内輪の恥を他人に話さない方が良い。