Meaning

noun the quality of being bold and enterprising

noun a feeling of hostility that arouses thoughts of attack

noun a natural disposition to be hostile

originEtymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *gʰredʰ-der. Latin gradior Latin aggredior Latin aggressuslbor. English aggress Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Old French -ifbor. Middle English -yf English -ive English aggressive Proto-Germanic *-in- Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂…

Etymology from Wiktionary, CC BY-SA 3.0