I am writing to apologize for the insulting remarks I made to you the other day. I understand that my words were hurtful and I am deeply sorry for the pain I have caused you.
I should not have said what I said, and I take full responsibility for my words and actions. I realize that my words were inappropriate and insensitive and I apologize for any hurt or distress I may have caused you.
I understand that my words were inappropriate and I regret that I said them. I will make sure that I think before I speak in the future. I will also make sure that I am more mindful of how my words can affect someone.
I am truly sorry for my words and I hope that you can forgive me. I understand that words can hurt and I will be more careful in the future. I hope that you can accept my apology and that we can move forward.
Once again, I apologize for my words and I hope that you can forgive me.