Aggression
early 17th century (in the sense ‘an attack’): from Latin aggressio(n- ), from aggredi ‘to attack’, from ad- ‘towards’ + gradi ‘proceed, walk’.
wiktionary
From Middle French aggression, from Latin aggressio, from aggressus, past participle of aggredior(“to approach, address, attack”).
etymonline
aggression (n.)
1610s, "unprovoked attack," from French aggression (16c., Modern French agression), from Latin aggressionem (nominative aggressio) "a going to, an attack," noun of action from past-participle stem of aggredi "to approach; to attempt; to attack," from ad "to" (see ad-) + gradi (past participle gressus) "to step," from gradus "a step," figuratively "a step toward something, an approach" (from PIE root *ghredh- "to walk, go"). Psychological sense of "hostile or destructive behavior" first recorded 1912 in A.A. Brill's translation of Freud.
