I am writing to you not to associate with anyone who bears the name of brother if he is guilty of sexual immorality or greed, or is an idolater, reviler, drunkard, or swindler—not even to eat with such a one. –1 Corinthians 5:11

Definitions of Revile:

to speak to or about in an insulting way.  –Merriam-Webster Dictionary

someone who speaks abusively or contemptuously to or of another person or thing.  –Random House Unabridged Dictionary

to use abusive or contemptuous language in speaking to or about; call bad names…If someone or something is reviled, people hate them intensely or show their hatred of them.  –Collins Advanced Learner’s Dictionary

to criticize someone strongly, or say unpleasant things to or about someone.  –Cambridge Dictionary

A reviler is a person who uses words to damage, control, or insult someone’s character or reputation. Today we would call a reviler a verbal abuser.  –GotQuestions.org