agresión
/aɡɾeˈsjon/ · B1 · noun · f
aggression
👊 Etymology: Latin aggredi = ad (toward) + gradi (to step), to step at someone
Agresión is the first step toward someone in a hostile way. It shares a root with English aggression, so the meaning carries straight over. It is feminine like most -ión nouns: la agresión.