Which word describes someone who is prone to quarrel or fight?

The term "pugnacious" specifically refers to a person who is inclined to engage in fights or arguments. It derives from the Latin word pugnare, meaning "to fight." A pugnacious individual is often eager to argue or confront others, indicating an inherent aggressiveness or readiness for verbal or physical conflict. This quality separates it from other related terms, as it emphasizes a combative spirit or personality.

In this context, "pugnacious" aptly characterizes someone who is not just capable of fighting but is also enthusiastic about confrontation. Understanding this helps clarify the context in which a person might exhibit such behavior in social or interpersonal situations.