bet
noun
Bet means "a promise to do something or a guess about what will happen". It's like a game where you make a guess about what will happen and if you are right you win.
verb
Bet means to risk something, like money, on the outcome of an event. For example, you might bet money on a sports game, or on the roll of a dice.
Example
noun
1. I bet you didn't expect that result.
2. I'd bet my life on it.
3. I bet you can't beat my score.
verb
1. I bet that he will be late again.
2. I bet you can't eat five burgers in one sitting.
3. I bet he won't show up to the party.