To let the cat out of the bag

Meaning

To reveal a secret

Examples

• John: I was trying to keep it a surprise, but I accidentally <b>let the cat out of the bag</b>.
• Alice: Oh no! I was really looking forward to the surprise. Well, at least now we know!
• John: I know, I feel bad. I should have been more careful.
• Alice: It's okay. Let's just hope it doesn't ruin everything. It's important to learn from this. Next time, we must ensure not to <b>let the cat out of the bag</b> so early.