My apologies.
B1A short and concise apology.
I messed up.
B1A casual and informal admission of a mistake.
I'm really sorry about that.
B1Expressing sincere regret.
Forgive me.
B1Asking for forgiveness.
I deeply regret my mistake.
B1Expressing strong remorse.
That was my fault.
B1Taking responsibility for the mistake.
I should have...
B1Expressing regret for not doing something.
I didn't mean to...
B1Explaining the unintentional nature of the mistake.
It was an oversight on my part.
B1Acknowledging a mistake due to carelessness.
I'm sorry for the trouble.
B1Apologizing for any inconvenience caused.
I'll make sure it doesn't happen again.
B1Assuring that the mistake won't be repeated.
I regret what happened.
B1Expressing regret for an event.
I feel terrible about this.
B1Expressing strong feelings of remorse.
I owe you an apology.
B1Acknowledging a debt of apology.
I'm to blame.
B1Taking responsibility.
It's all my fault.
B1Taking full responsibility.
I'm very sorry.
B1A simple and sincere apology.
I understand your frustration.
B1Acknowledging the other person's feelings.
I'll try to do better next time.
B1A promise to improve.
I hope you can forgive me.
B1Expressing a desire for forgiveness.
I really should have been more careful.
B1Taking responsibility and acknowledging lack of care.
I sincerely apologize for the mistake.
B2A formal expression of regret.
Please accept my apologies.
B2A polite and formal way to apologize.
I'm truly sorry for the oversight.
B2Expressing regret for a mistake that was overlooked.