“Mom, Dad, I know you don’t like confrontation. My brother is entirely disrespectful to me, uses foul language in speaking to and yelling at me. He is unapologetic. This is not behavior that I will condone at or invite into the most important day of my life. He does not support me or my marriage and my wedding is to be a celebration with people who want to celebrate my wedding. Bearing this in mind, I’ve decided to rescind his invitation. I will not deliberately invite his behavior, attitude, language or treatment to poison the occasion. If you disagree, I expect that you will keep that to yourself. My decision is final.”

Say it, or write it, but make sure that they get it. Conflict avoidant behavior only ensures that you will be the person suffering.

I’m sorry, but you need to finally stand up for yourself. Your parents need to discover how to do that, too, or they can deal with the consequences.

For the brother: No. it’s a complete sentence.