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whack

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verb [transitive] informal American English pronunciation: whack /wæk/ American English pronunciation: whack /hwæk/ 
Word Forms
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present tense
I/you/we/theywhack
he/she/itwhacks
present participlewhacking
past tensewhacked
past participlewhacked

Related dictionary definitions

  1. 1
    to hit someone or something with a lot of force

    I whacked my knee getting out of the car.

    Some kids were whacking the tree with sticks.

    He whacked his little sister on the head with a spoon.

  2. 2
    American very informal to charge someone a lot of money

    Then they whack us with a 12% hotel tax.

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