mop-up
Americannoun
verb
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to clean with a mop
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informal to complete (a task, etc)
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military to clear (remaining enemy forces) after a battle, as by killing, taking prisoner, etc
noun
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Clear an area of remaining enemy troops after a victory, as in They left behind just one squadron to mop up . [c. 1900]
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Perform the minor tasks that conclude a project or activity, as in Go ahead, I'll mop up these last invoices . [First half of 1900s] Both usages transfer the task of housecleaning with a mop to other kinds of cleanup.
Etymology
Origin of mop-up
First recorded in 1895–1900; noun use of verb phrase mop up
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.
Addressing the LAFD’s failure to fully extinguish the Lachman fire, which later reignited into the Palisades fire, Chief Jaime Moore conceded at a January board meeting that mop-up procedures needed to be strengthened.
From Los Angeles Times • Mar. 18, 2026
Since they were already there, he figured, some extra mop-up could save them work down the line if the fire were to reignite.
From Los Angeles Times • Mar. 11, 2026
Even with the internal investigation underway, Moore said he spoke with the battalion chief who was on duty during the Lachman fire mop-up.
From Los Angeles Times • Jan. 13, 2026
The firefighter said he saw a state park representative on scene, though he did not speak to the person and had no information about whether the person influenced mop-up operations.
From Los Angeles Times • Nov. 19, 2025
They could have brought a hound here just on chance that they might miss one of us in the initial mop-up.
From Storm Over Warlock by Norton, Andre
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.