Regret (emotion)

Regret is when you feel bad about something you did or didn't do in the past. It's like you wish you could go back and make a different decision so you wouldn't have to feel guilty or sad about what happened. Just like how sometimes you might wish you could take back saying something mean to someone because it hurts their feelings and makes you feel bad afterwards. Regret can make you feel really bad, but it's also a way to learn from your mistakes and try to do better next time.