Definition
To unintentionally reveal a secret or hidden information.
不小心洩漏秘密或隱藏的訊息。
I was trying to keep the surprise party a secret, but my sister let the cat out of the bag.
我本來想保守驚喜派對的秘密，但我妹妹不小心說漏了嘴。
John accidentally let the cat out of the bag about their upcoming move.
約翰不小心說漏了他們即將搬家的消息。
She didn't mean to tell anyone, but she let the cat out of the bag about her promotion.
她本不想告訴任何人，但她不小心透露了升職的消息。