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View synonyms for

knockout

[ nok-out ]

noun

  1. an act or instance of knocking out.
  2. the state or fact of being knocked out.
  3. a knockout blow.
  4. Informal. a person or thing overwhelmingly attractive, appealing, or successful.
  5. a panel in a casing, can, or box, especially of metal or plastic, so designed that it can readily be removed, as by punching, hammering, or cutting, to provide an opening into the interior:

    a knockout in a junction box.

  6. Machinery. a device for knocking something loose, as finished work from a lathe chuck.


adjective

  1. that knocks out:

    the knockout punch.

knockout

/ ˈɒˌʊ /

noun

  1. the act of rendering unconscious
  2. a blow that renders an opponent unconscious
    1. a competition in which competitors are eliminated progressively
    2. ( as modifier )

      a knockout contest

  3. a series of absurd invented games, esp obstacle races, involving physical effort or skill
  4. informal.
    a person or thing that is overwhelmingly impressive or attractive

    she's a knockout

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to render unconscious, esp by a blow
  2. boxing to defeat (an opponent) by a knockout
  3. to destroy, damage, or injure badly
  4. to eliminate, esp in a knockout competition
  5. informal.
    to overwhelm or amaze, esp with admiration or favourable reaction

    I was knocked out by that new song

  6. to remove the ashes from (one's pipe) by tapping
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of knockout1

1810–20; 1935–40 knockout fordef 4; noun, adj. use of verb phrase knock out
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Example Sentences

Examples have not been reviewed.

To achieve that feat, they must also do something else they have never done before, which is to get past Barcelona in the Women's Champions League knockout stage.

From

Never before have five goals been scored during a period of extra time in a European knockout fixture.

From

That relative lack of intrigue - contrasted with the thrill of Champions League knockout football - has got people asking if the Premier League is boring...

From

The Gunners also have a good record when leading after the first leg of a Champions League knockout match - they have progressed from six of the eight ties they have won the opening match.

From

Under Howe, the Magpies memorably beat Paris St-Germain in the Champions League group stage in the 2023-24 campaign but failed to make it to the knockout stage.

From

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knock on woodknock out