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: ready and willing to fight or quarrel

Example sentence:
When Martin's stepbrother first moved in, both of them were often truculent; over time, however, they grew to like one another's company.

Etymology:
"Truculent" traces back to the Latin word "trux," meaning "savage." "Savage" means "fierce" or "ferocious"—the attributes of a person likely to resort to fighting. A person with an aggressive attitude might also be described by the word "pugnacious." This fighting word traces back to the Latin verb "pugnare," meaning "to fight." Two more words for a person who is inclined to fight are "belligerent" and "bellicose." Belligerent" and "bellicose" both have roots in a particular kind of fighting; they trace back to the Latin noun "bellum," meaning "war."