let the cat out of the bag
Say it: let the CAT out of the bag /ˌlɛt ðə ˈkæt aʊt əv ðə ˈbæɡ/ · idiom
What “let the cat out of the bag” means
Reveal a secret, usually by accident.
More precisely: To reveal a secret, usually by accident.
Example: “My sister let the cat out of the bag about the surprise party.”
When to use it
In informal conversation, when someone accidentally gives away information that was meant to stay secret.
Similar words
spill the beans, give the game away
Quick check
You mention your friend's hidden wedding plans in front of their parents, then realise they hadn't told them. Which phrase fits?
let the cat out of the bag or let off steam?
Show the answer
let the cat out of the bag
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