English Idiom - Let The Cat out of the Bag

Have you ever accidentally told a secret, or shared something you shouldn't? If you have, you let the cat out of the bag. We use this phrase to say that you let a secret 'escape'.

Here’s some examples!


Examples

Christine told us not to tell anyone that she is pregnant, but I accidentally mentioned it to a friend and let the cat out of the bag. I felt awful! 

Lynn told me that she was quitting her job. I didn't realize this was a secret, and I let the cat out of the bag by telling her coworker. Luckily, her boss wasn't mad!

My fiancé and I weren't ready to tell our parents we were engaged, but when I forgot to take off my engagement ring, the cat was out of the bag." 💍

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