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.
There was a small kitchen, with a sign taped to the fridge: “Please clean up after yourself no maid service here!!!”
From Slate ● Sep. 18, 2026
But unions have signalled they are open to discussions with policymakers on any initiatives to "clean up" party funding.
From BBC ● Sep. 15, 2026
Town hall-hopefuls have also pledged to clean up graffiti-covered train stations, end "forever-building sites", fix buckled cycling lanes and take steps to ease a desperate shortage of affordable housing.
From Barron's ● Sep. 15, 2026
“By Any Means” suggests it takes a dirty man to clean up a historically and culturally entrenched mess.
From The Wall Street Journal ● Sep. 3, 2026
Jonah wondered what she’d promised in exchange: to clean up the kitchen after dinner every single night for the rest of the school year?
From "Found" by Margaret Peterson Haddix
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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.