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There are two quash verbs in the English language, and although their meanings are similar, they have entirely different origins. Both essentially mean to get rid of something—you can quash a rumor, for example, or you can quash a judicial order. The legal term quash (meaning "to nullify") comes from the Anglo-French words casser or quasser, meaning "to annul," and is ultimately from Latin cassus, "to void." The other quash means "to suppress or extinguish summarily and completely." It derives from the Middle English word quashen, meaning "to smash," and is ultimately from a form of the Latin verb quatere, meaning "to shake."
Examples of quash in a Sentence
Jerel Ezell, MSNBC Newsweek, 28 Nov. 2025
Dissent has been quashed and protests, once a daily feature of life in Hong Kong, have been snuffed out.
—Catherine Nicholls, CNN Money, 26 Nov. 2025
That’s to quash electromagnetic noise—principally coming from power lines—that invariably gets picked up by the coils.
—David Schneider, IEEE Spectrum, 25 Nov. 2025
This past week, the White House explored using an executive order to quash state regulation on AI.
—Arkansas Online, 24 Nov. 2025
See All Example Sentences for quash
Cite this Entry
“Quash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quash. Accessed 30 Nov. 2025.
Copy CitationKids Definition
quash
2 of 2 verbVerb
Middle English quashen "to smash," from early French quasser, casser (same meaning), from Latin quassare "to shake violently, shatter," from quatere "to shake"
Verb
Middle English quashen "to nullify," from early French casser, quasser "to annul," from Latin cassare (same meaning), from earlier Latin cassus "void"
Legal Definition
quash
transitive verbTransitive verb
Anglo-French quasser, from Middle French casser, quasser, from Late Latin cassare, from Latin cassus void
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