clean sweep
Americannoun
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an overwhelming or decisive victory, as by a political candidate who wins in all or almost all election districts.
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the winning of all the prizes, rounds, contests, etc., in a competition or of all the games in a series.
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a thorough or sweeping change, especially one effected by the large-scale removal or elimination of unwanted persons or things.
The new president made a clean sweep when he joined the company, replacing all the department heads.
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.