wallop
Americanverb (used with object)
verb (used without object)
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Informal. to move violently and clumsily.
The puppy walloped down the walk.
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(of a liquid) to boil violently.
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Obsolete. to gallop.
noun
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a vigorous blow.
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the ability to deliver vigorous blows, as in boxing.
That fist of his packs a wallop.
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Informal.
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the ability to effect a forceful impression; punch.
That ad packs a wallop.
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a pleasurable thrill; kick.
The joke gave them all a wallop.
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Informal. a violent, clumsy movement; lurch.
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Obsolete. a gallop.
verb
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informal (tr) to beat soundly; strike hard
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informal (tr) to defeat utterly
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dialect (intr) to move in a clumsy manner
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(intr) (of liquids) to boil violently
noun
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informal a hard blow
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informal the ability to hit powerfully, as of a boxer
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informal a forceful impression
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a slang word for beer
verb
Other Word Forms
- outwallop verb (used with object)
- walloper noun
Etymology
Origin of wallop
1300–50; Middle English walopen to gallop, wal ( l ) op gallop < Anglo-French waloper (v.), walop (noun), Old French galoper, galop; gallop
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.
And just when you think you can’t possibly have an emotional connection to what you’re watching, a sudden wallop to the gut punches the tears right out of you.
From Salon • Mar. 19, 2026
U.S. airlines have already canceled nearly 6,000 flights through Sunday ahead of a winter storm expected to wallop two-thirds of the United States over the weekend.
From The Wall Street Journal • Jan. 24, 2026
Pilots wallop another outmatched opponent while waiting to be tested.
From Los Angeles Times • Sep. 8, 2025
For what it’s worth, the film boasts a wallop of a final line, which hits at the sickening reality of what it’s like to be both a child and a parent in America today.
From Salon • Aug. 8, 2025
“He took a wallop, that’s for sure. But you know what that’s like, don’t you?”
From "We'll Fly Away" by Bryan Bliss
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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.