45 synonyms for aggressive such as bold, antagonistic, assertive, and audacious. Aggressive is an adjective, and its antonyms are meek, friendly, and peaceful.
Antagonistic, argumentative, attacking, badass, bellicose, belligerent, combative, confrontational, expansionist, flag-waving, gung-ho, hawkish, hostile, intrusive, invasive, jingoistic, macho, militaristic, offensive, pugnacious, quarrelsome, sabre-rattling, truculent, violent, warlike, warmongering, and warring.
Assertive, audacious, bold, competitive, driving, dynamic, energetic, enterprising, feisty, forceful, go-ahead, in-your-face, insistent, pushing, pushy, vigorous, and zealous.