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knock out

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phrasal verb [transitive]
Word Forms
present tense
I/you/we/theyknock out
he/she/itknocks out
present participleknocking out
past tenseknocked out
past participleknocked out
  1. 2
    to make someone leave a competition by defeating them

    England had been knocked out of the World Cup by West Germany.

  2. 3
    to destroy something, or to stop it working

    The earthquake knocked out power supplies in many parts of the city.

  3. 4
    knock someone out informal to impress someone very much

    The response to my work has absolutely knocked me out.

  4. 6
    informal to produce something quickly or carelessly

    They've been knocking out candles at their factory since 1831.

  5. 7
    knock something out of someone to make someone lose a quality

    All the enthusiasm had been knocked out of him.

See also main entry: knock

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