wager UK /ˈweɪ.d͡ʒə(ɹ)/US /ˈweɪ.d͡ʒɚ/noun 5verb 2forms 3 noun5 •A bet; a stake; a pledge. •A contract by which two parties or more agree that a certain sum of money, or other thing, shall be paid or delivered to one of them, on the happening or not happening of an uncertain event.Besides these Plates, the Wagers may be as the Persons please among themselves, but the Horses must be evidenced by good Testimonies to have been bred in Ireland. — 1673 •The subject of a bet. •Agent noun of wage; one who wages.They were wagers of warfare against the wilderness and the Indians, and founders of families and towns. — 1912 •An offer to make oath. verb2 •To bet something; to put it up as collateral.I'd wager my boots on it. •(figurative) To suppose; to dare say.I'll wager that Johnson knows something about all this. formswagered · wagering · wagers