quarrelsome

Synonyms: argumentative bad-tempered bellicose belligerent brawling cantankerous cat-and-dog choleric churlish combative contentious crabby cross disputatious dissentious excitable fiery fractious gladiatorial hasty have chip on shoulder hotheaded huffy impassioned irascible irritable litigious ornery passionate peevish pettish petulant pugnacious querulous ructious snappy tempestuous thin-skinned touchy truculent turbulent unruly violent war

Antonyms: agreeable forgiving friendly good-natured happy patient