Phrases for Apologizing for Mistakes

I take full responsibility for my error.

B2

Accepting blame for the mistake.

I messed up.

B2

A casual way of admitting a mistake.

My apologies; I should have been more careful.

B2

Expressing regret and acknowledging lack of care.

I'm so sorry; I didn't mean to.

B2

Expressing regret and denying intention.

I regret my actions.

B2

A formal expression of regret for actions leading to a mistake.

Forgive me.

B2

A simple and direct apology.

I owe you an apology.

B2

Acknowledging a debt of apology.

That was my fault.

B2

A simple and direct acceptance of blame.

I'm to blame.

B2

Accepting responsibility for the mistake.

I'm really sorry about that.

B2

A casual expression of regret.

I deeply regret the error.

B2

Expressing deep regret for the mistake.

I apologize for any inconvenience caused.

B2

Acknowledging the negative impact of the mistake.

I feel terrible about what happened.

B2

Expressing strong feelings of guilt.

I'll try to make it up to you.

B2

Offering to compensate for the mistake.

This is entirely my responsibility.

B2

Taking complete ownership of the mistake.

I understand your frustration.

B2

Acknowledging the other person's feelings.

I should have done things differently.

B2

Reflecting on the mistake and identifying better approaches.

I'm at fault.

B2

A concise way of accepting blame.

I own this mistake.

B2

Taking full ownership and responsibility.

Let me make amends.

B2

Offering to rectify the situation.

There's no excuse for my error.

B2

Accepting blame without justification.

I'm very sorry for the trouble.

B2

Expressing regret for the inconvenience caused.

I sincerely regret the error.

C1

Expressing deep remorse for a mistake.

Please accept my most profound apologies.

C1

Offering a very deep and formal apology.