risk (a sum of money or valued item) against someone else's on the basis of the outcome of an unpredictable event; bet

a total of $770,700 was wagered by fans at other sites on the track

I'll wager half my winnings on it

everyone will be able to make single bets, rather than having to wager on three matches

used to express certainty

I'll wager she makes that trip to Virginia

I'd wager that the results would be better than those achieved through traditional methods