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bet

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verb [intransitive/transitive] American English pronunciation: bet /bet/ 
Word Forms
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present tense
I/you/we/theybet
he/she/itbets
present participlebetting
past tensebet or betted
past participlebet or betted
  1. to risk an amount of money by saying what you think will happen, especially in a race or game. You lose the money if you are wrong and win more if you are right
    bet on:

    Thousands of people bet on the result of the game.

    bet something on something:

    I bet $10 on each of the horses.

    bet (someone) that:

    He bet me $20 that I couldn’t keep quiet for ten minutes.

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