Idiom – Let The Cat Out Of The Bag

English Idiom – Let the cat out of the bag.

Meaning – To reveal a secret. This expression is usually used when you reveal a secret by accident. You can also use this idiom to refer to some private information being revealed accidentally.

Related Cat Idioms:

  • Cat got your tongue?
  • Copycat
  • Curiosity killed the cat – Too much curiosity can be dangerous.
  • Fat cat – A negative term for a wealthy businessperson.
  • Like the cat that’s got the cream – Extremely pleased.
  • Look what the cat dragged in! – This expression is said to somebody who arrives looking like a complete mess.
  • No room to swing a cat – Used to refer to a very small room or area.
  • Raining cats and dogs
  • When the cat’s away, the mice will play


When could you use this idiom?

  • You accidentally reveal that someone is pregnant.
  • Somebody accidentally revealed a secret.
  • When you want to remind someone that they should not share a secret.
  • Your friend wants to tell you some interesting gossip.


  • “Jack let the cat out of the bag last night. I can’t believe you are finally going to tie the knot!”

In The News:

Larry Fitzgerald ‘hasn’t let the cat out of the bag to anybody’ about future plans


  • Is there an idiom like this in your country?

What is an idiom?

An idiom is a word or phrase that is not taken literally.  An idiom is an expression that cannot be understood from the meanings of its individual words, but has a separate meaning of its own.

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FunkyEnglish is a website that helps you improve your English. We offer quick lessons that teach idiomsslangphrasal verbs and more. Visit our homepage to see our latest articles, or use the menu to find specific content!

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