Phrases Phrases for Expressing Regret

In retrospect, I should have...

B2

Meaning

Similar to 'with hindsight', but slightly more formal.

Example sentences

John: The project didn't go as planned.

Alice: Yes, in retrospect, I should have communicated better with the team.

John: I agree. In retrospect, I should have allocated more time for testing.

Alice: We've learned a valuable lesson for next time.