Belligerent means aggressive and eager to fight or argue. A belligerent person looks for conflicts and confrontations rather than trying to get along peacefully with others.

You might encounter a belligerent classmate who turns every disagreement into an argument, always ready to push back even when there's no real reason to fight. When someone speaks in a belligerent tone, their voice carries hostility and challenge, signaling they're spoiling for a confrontation.

In formal contexts, it can describe countries actively fighting in a war. During World War II, the United States became a belligerent nation when it entered the conflict. But you'll more commonly see it describe personal behavior: a belligerent customer shouting at a store employee, or a belligerent player arguing with a referee over every call.

Being belligerent is different from simply standing up for yourself or defending what's right. A belligerent person brings unnecessary aggression to situations, making conflicts worse rather than better. They approach conversations like battles to be won rather than problems to be solved. While confidence and assertiveness help you navigate difficult situations, belligerence usually just creates more problems than it solves.