bet >> /bɛt/
Definition: [verb] Risk something, usually a sum of money, against someone else's on the basis of the outcome of a future event, such as the result of a race or game.
Example: I would be prepared to bet that what he really wanted was to settle down
Definition: [verb] Feel sure.
Definition: [noun] An act of risking a sum of money on the outcome of a future event.
Example: every Saturday she had a bet on the horses