Phrases Phrases for Expressing Regret

That was a mistake.

B1

Meaning

Acknowledging an error in judgment.

Example sentences

John: That was a mistake. I should have listened to your advice.

Alice: It's okay, we all make mistakes sometimes.

John: I learned a valuable lesson, though.

Alice: Glad to hear that! I really think next time, you won’t make a mistake like that again. But honestly, that was a mistake.