vituperate
To harshly insult and attack someone with very angry words.
To vituperate means to criticize someone harshly and angrily, using bitter, insulting language. When someone vituperates, they attack with words meant to hurt and condemn, going far beyond disagreement or pointing out problems.
Imagine a coach who doesn't just correct a mistake but vituperates a player, shouting insults about their character and abilities. Or picture a customer who doesn't simply complain about poor service but vituperates the staff with cruel, abusive language.
You'll mostly encounter this word in formal writing or literature describing someone's angry outburst. A book might say that a character “vituperated his enemies” or “launched into a vituperative tirade” (the adjective form, meaning full of harsh criticism).
Vituperation rarely accomplishes anything positive. When people feel attacked and insulted, they stop listening to any valid points hiding beneath the anger. The word itself sounds almost as harsh as what it describes: sharp, aggressive, and unpleasant.