quench
Americanverb (used with object)
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to slake, satisfy, or allay (thirst, desires, passion, etc.).
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to put out or extinguish (fire, flames, etc.).
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to cool suddenly by plunging into a liquid, as in tempering steel by immersion in water.
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to subdue or destroy; overcome; quell.
to quench an uprising.
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Electronics. to terminate (the flow of electrons in a vacuum tube) by application of a voltage.
verb
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to satisfy (one's thirst, desires, etc); slake
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to put out (a fire, flame, etc); extinguish
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to put down or quell; suppress
to quench a rebellion
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to cool (hot metal) by plunging it into cold water
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physics to reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
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electronics
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to suppress (sparking) when the current is cut off in an inductive circuit
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to suppress (an oscillation or discharge) in a component or device
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Other Word Forms
Etymology
Origin of quench
1150–1200; Middle English quenchen, earlier cwenken; compare Old English -cwencan in ācwencan to quench ( cf. a- 3)
Explanation
Quench means to put out, put an end to, or satisfy. If you're stranded in the middle of the desert with nothing to drink, you're probably dreaming of a nice big glass of ice water to quench your thirst. Quench originally meant “extinguish fires.” That meaning still works today, but we've expanded it to also apply to quenching the fiery thirst of a summer marathon runner or quenching the hot flames of passion. If you want to get deep about the word quench, consider what Voltaire said: “Superstition sets the whole world in flames; philosophy quenches them.”
Vocabulary lists containing quench
Where the Red Fern Grows
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"There Will Come Soft Rains" by Ray Bradbury (1950)
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40 SAT words Beginning with "Q"
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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.
Key questions for officials, Picazo said, will be determining how much MMA remains in the tank “and how to quench whatever is remaining.”
From Los Angeles Times • May 23, 2026
Consumer tastes have changed dramatically since Coke’s heyday, and Vita Coco has responded with a product mix that should quench investors’ thirst for growth and reasonable value.
From Barron's • Nov. 13, 2025
When it stopped raining he found a spring where he was able to quench his thirst, but he was so unwell he was unable to eat one of the snack bars he was carrying.
From BBC • Oct. 15, 2025
“For a lot of people, a beverage is just to quench the thirst or get an energy boost with caffeine, so yeah maybe the tea behind it isn’t really that important for them.”
From Salon • Jul. 31, 2025
"Water will not quench it, I am told."
From "A Clash of Kings" by George R.R. Martin
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.
