knock out
Idioms-
Also, knock out cold . Render unconscious by a blow or some other means. For example, It was just a swinging door, but it knocked her out , or Just one of those sleeping pills can knock you out cold . [Late 1500s]
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Make tired, exhaust, as in That sightseeing tour knocked me out .
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Render useless or inoperative, as in The storm knocked out the power .
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See knock off , def. 2.
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See knock oneself out .
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
And yes, your day-to-day might feel more strained while you’re trying to knock out this last $20,000 — but I promise that you’ll feel much lighter entering your 41st birthday with no debt.
From MarketWatch ● Jun. 30, 2026
Particularly fierce solar storms can knock out satellites and threaten astronauts -- and create dazzling auroras in the skies known as the northern or southern lights.
From Barron's ● May 19, 2026
Nor does the Minnesota Wild defenseman hit the hardest or knock out the most teeth.
From The Wall Street Journal ● May 3, 2026
Rebounding from dreadfully depressing injury news to knock out the NBA’s best rebounding team?
From Los Angeles Times ● Apr. 17, 2026
“Awesome. You’ll knock out those hours in no time.”
From "Orphan Train" by Christina Baker Kline
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
