clean up
Britishverb
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to rid (something) of dirt, filth, or other impurities
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to make (someone or something) orderly or presentable
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(tr) to rid (a place) of undesirable people or conditions
the campaign against vice had cleaned up the city
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informal (intr) to make a great profit
noun
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the process of cleaning up or eliminating something
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( as modifier )
a cleanup campaign
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informal a great profit
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Also, clean out . Make clean or orderly, as in She cleaned up the cellar after the flood , or Dad said he cleaned out the garage . [First half of 1800s]
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Also, wash up . Wash or tidy oneself, as in Do I have time to clean up before dinner?
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Settle or dispose of, as in He cleaned up all the bills that had arrived during his vacation .
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Bring to a certain standard of order or morality, as in This script won't do; we'll have to clean up the language . Applied to personal behavior, it also is put as clean up one's act , as in He'll have to clean up his act and obey the rules . [c. 1900]
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Succeed, especially financially, as in We had fantastic luck at the races and really cleaned up . [ Slang ; first half of 1800s]
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Also, clean up on . Defeat or vanquish, kill, as in We're cleaning up all the other teams , or With enough ammunition we could clean up on this pocket of snipers . [ Slang ; mid-1800s]
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.
Jo, who was visiting the beach with her young family, added: "If you're going to bring your lunch to the beach, you should clean up after yourselves."
From BBC • May 27, 2026
McKinney said Airbnb simply believes in his campaign to clean up the city, which would improve tourism and the company’s profits in the city.
From Los Angeles Times • May 23, 2026
Researchers developed a modified QuEChERS method using Z Sep⁺ clean up and gas chromatography with tandem mass spectrometry.
From Science Daily • May 22, 2026
"I understood we had some sort of a process to clean up our national monuments, and I don't feel like he went through that process," she said.
From Barron's • May 15, 2026
“Hmph. Go on, then, and run that extra wire back to the barn. Then clean up for dinner. Hurry up, now—your grandmother’s waiting.”
From "Tristan Strong Punches a Hole in the Sky" by Kwame Mbalia
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.
