Same word as peradventure:

accident, advantage, adventure, bad luck, break, cast, casualty, coincidence, contingency, destination, destiny, doom, even chance, fluke, fortuity, fortune, future, gamble, good luck, hap, haphazard, happening, hazard, heads or tails, hit, in the cards, kismet, lot, lottery, luck out, lucky break, misfortune, occurrence, odds, outcome, peradventure, peril, providence, risk, stroke of luck, throw of the dice, toss-up, turn of the cards, way the cookie crumbles, wheel of fortune