(past tense past participle bet) verb [I/T]
to risk an amount of money by saying what you think will happen in a race or gameThousands of people bet on the result of the match.[/ex]I bet £10 on each of the horses.[/ex]He bet me £20 that I couldn't keep quiet for ten minutes.[/ex]•I bet/I'll bet (that) — spoken used for saying that you are sure about something[/ex]I bet the train will be late again.[/ex]IInoun [C]bet [bet]an agreement in which you bet money on what will happen, or the amount of money that you betHe likes to have a bet on his home team, even though they always lose.[/ex]•the/sb's best bet — the thing that gives the best chance of a successful result[/ex]Our best bet would be to take the train.[/ex]a good/safe bet — something that is likely to happen, or someone or something that is likely to be successful[/ex]It's a safe bet that the others won't make the same mistake.[/ex]See:
Dictionary for writing and speaking English. 2014.