From Longman Dictionary of Contemporary Englisha clean sweepa clean sweepa) WINa very impressive victory in a competition, election etca clean sweep for All the polls had pointed to a clean sweep for the Democrats. Hopes that the French would make a clean sweep at the Games were dashed. b) CHANGE/MAKE something DIFFERENTa complete change in a company or organization, often by removing people → clean
Examples from the Corpus
a clean sweep• Lismore's minor outfit were beaten 21-14 by Notra Dame to destroy chances of a clean sweep.• The poll also pointed to a clean sweep for the Democrats in elections for lieutenant-governor and attorney-general.• Lewis, Burrell, and Mitchell made it a clean sweep for the U.S. in the 100 meters.• Now is the time to make a clean sweep of all the jobs you put off during the bad weather.• But he failed to achieve a clean sweep of the end-of-season awards.• I had made up my mind at the Scenic Overlook to make a clean sweep through the house. 