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smack

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verb British English pronunciation: smack /smæk/ 
Word Forms
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present tense
I/you/we/theysmack
he/she/itsmacks
present participlesmacking
past tensesmacked
past participlesmacked
  1. [transitive] Sound effect: smack to hit someone with your flat hand or a flat object

    I don't believe it's right to smack children when they're being naughty.

    1. a.
      [transitive] British informal to hit someone with your fist

      He just turned and smacked me in the face.

    2. b.
      [intransitive/transitive] to hit something hard and noisily
      smack into/against etc:

      Another car smacked into us from behind.

      smack something into/onto/down etc:

      She smacked the book down on the desk.

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