8 letters · 12 points in Scrabble
noun an event that occurs at a critical time
noun a vaguely specified social event
noun reason
originFrom Middle English occasioun, from Middle French occasion, from Old French occasiun, from Latin occāsiōnem, noun of action from perfect passive participle occāsus, from verb occidō, from prefix ob- (“down", "away”) + verb cadō (“fall”).
Etymology from Wiktionary, CC BY-SA 3.0