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knock

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verb knock pronunciation in American English /nɑk/
Word Forms
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present tense
I/you/we/theyknock
he/she/itknocks
present participleknocking
past tenseknocked
past participleknocked
  1. 1
    [intransitive/transitive] to hit something, causing damage or harm
    Mike had knocked his leg against a table.
    Synonyms and related words
    1. a.
      [transitive] to hit something and force it somewhere
      He knocked a couple of nails into the door.
      Synonyms and related words
    2. b.
      [transitive] to hit someone very hard, so that they fall or become unconscious
      knock someone to/off/over/down: They knocked him to the ground.
      The force was powerful enough to knock him off balance.
      knock someone off their feet: Each fighter tries to knock the other off his feet.
      knock someone unconscious: The driver had been knocked unconscious by the impact.
    3. c.
      [transitive] to hit a ball
      He knocked two out of the park.
    4. d.
      [transitive] to make a hole or space in something by hitting it many times
      They knocked a hole for the doorway.
  2. 3
    [transitive] informal to criticize someone or something in a way that seems unfair
    The newspapers spend too much time knocking government policy.
  3. 4
    [intransitive] to hit a door with your hand or a knocker so that someone inside knows you are there
    They walked up to the door and knocked loudly.
    knock on/at: I knocked on his door but got no answer.
    Synonyms and related words

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