American English

Definition of whack noun from the Oxford Advanced American Dictionary



[usually singular] (informal)
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  • the act of hitting someone or something hard; the sound made by this He gave the ball a good whack. I heard the whack of the bullet hitting the wood.
  • Idioms
      out of whack (informal)
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    1. 1no longer correct or working correctly The system is clearly out of whack. All the traveling had thrown my body out of whack. The spending priorities were out of whack.
    2. 2not agreeing with or not the same as something else Expectations and reality got out of whack.
    See the Oxford Advanced Learner's Dictionary entry: whack

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