Another word for aggressive
Energetic and forceful
assertive, forward, pushing, enterprising, forceful, domineering, self-assertive, outspoken, bold, energetic, vigorous, dynamic, driving, determined, competitive, activist, proactive, pushy*, hard-hitting*, hustling*, take-charge*, go-ahead*, go-getter*, Type A*.
belligerent, combative, pugnacious, militant, martial, encroaching, warlike, attacking, bellicose, threatening, advancing, offensive, antagonistic, disruptive, truculent, hostile, intrusive, destructive, warmongering, hawkish, onrushing, contentious, quarrelsome, intruding, battering, rapacious, invading, on the offensive, guilty of aggression, up in arms*, on the warpath*, feisty*, scrappy*, trigger-happy*.
Antonyms peaceful*, peace-loving, dovish.
aggressive implies a bold and energetic pursuit of one's ends, connoting, in derogatory usage, a ruthless desire to dominate and, in a favorable sense, enterprise or initiative; militant implies a vigorous, unrelenting espousal of a cause, movement, etc. and rarely suggests the furthering of one's own ends; assertive emphasizes self-confidence and a persistent determination to express oneself or one's opinions; pushing is applied derogatorily to a forwardness of personality that manifests itself in officiousness or rudeness