lay odds

verb2

1. •
   To offer a bet in which one stands more to lose than the opponent; or a bet in some other way favourable to the opponent.

   • Prince John: "I will lay odds that, ere this year expire, / We bear our civil swords and native fire / As far as France. I heard a bird so sing, / Whose music, to my thinking, pleas'd the King." — 1596
2. •
   To feel certain about something.