let the cat out of the bag

اجازه برای فاش شدن دادن

Meaning: If you let the cat out of the bag, you let someone know a secret.

For example:

  • We'd planned a surprise party for Donna, but some guy she works with let the cat out of the bag, so now she knows.
  • Don't forget that this is a secret, so whatever you do, don't let the cat out of the bag