泄露秘密
(无意中)泄露秘密
to tell a secret carelessly or by mistake
I wanted it to be a surprise, but my sister let the cat out of the bag.我想给大家来个惊喜,可我妹妹却先说漏了嘴。
释义来自《牛津高阶英汉双解词典》第 9 版