let the cat out of the bag

Verb

idiomatic

(idiomatic) To disclose a secret; to let a secret be known, often inadvertently.

Japanese Meaning

秘密をばらす / 秘密をうっかり口外する / 秘密を漏洩させる

I accidentally let the cat out of the bag about the surprise party when I mentioned the cake.

ケーキに触れてしまい、うっかりサプライズパーティーの秘密を明かしてしまった。

Sense（1）

(idiomatic) To disclose a secret; to let a secret be known, often inadvertently.

It was going to be a surprise party until someone let the cat out of the bag.

lets the cat out of the bag

（ present singular third-person ）

letting the cat out of the bag

（ participle present ）

let the cat out of the bag

（ participle past ）

let the cat out of the bag

（ past ）