Meaning: To reveal a secret.

Examples:

As we were planning our mom’s surprise birthday party, my sister reminded me not to let the cat out of the bag.

You didn’t hear they’re having a baby? I guess I let the cat out of the bag!

He finally let the cat out of the bag and confessed to the crime.

Pop Quiz:

Which of the following is an example of letting the cat out of the bag?

A.  Reminding someone to take out the garbage.

B.  Telling someone what someone else is going to give them for Christmas.

C.  Sending an email to your teaching saying that you and your classmates have gotten a copy of next week’s test.

To see the correct answer, click on “Continue reading”:

The correct answers are B and C. Both are examples of revealing secrets.