Synonyms of aggressive

2 Syllables
scrappier, macho, hawkish, viral, rampant, scrappy, defiant, gumptious, armier, loury, banzai, martial
3 Syllables
go-getting, pugnacious, ambitious, intruding, dog-eat-dog, battleful, disturbing, lowery, proactive, contentious, precocious, truculent, noncivil, warlike, barbaric, rapacious, kinetic, soldierly, gogetting, assailing, impendent, attacking, militant, dynamic, advancing, encroaching, invading, threatening
4 Syllables
resourceful, exponential, intrusive, bellicose, disruptive, military, belligerent, militaries, warmongering, combative, minatory, quarrelsome, destructive, offensive, goal-oriented, iron-willed, energetic, exponentials, enterprising
5 Syllables
militaristic, intimidating, competitive, antipathetic, comminatory, venturesome
6 Syllables
ultramasculine