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See more synonyms for quench on Thesaurus.com
verb (used with object)
  1. to slake, satisfy, or allay (thirst, desires, passion, etc.).
  2. to put out or extinguish (fire, flames, etc.).
  3. to cool suddenly by plunging into a liquid, as in tempering steel by immersion in water.
  4. to subdue or destroy; overcome; quell: to quench an uprising.
  5. Electronics. to terminate (the flow of electrons in a vacuum tube) by application of a voltage.
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Origin of quench

1150–1200; Middle English quenchen, earlier cwenken; compare Old English -cwencan in ācwencan to quench (cf. a-3)
Related formsquench·a·ble, adjectivequench·a·ble·ness, nounquench·er, nounun·quench·a·ble, adjectiveun·quenched, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for unquenchable

rapacious, ravenous, insistent, urgent, buoyant, boisterous, rebellious, ebullient, insatiable, avid, prodigious, insatiate, clamorous, crying, demanding, desiring, exigent, gluttonous, greedy, importunate

Examples from the Web for unquenchable

Contemporary Examples of unquenchable

Historical Examples of unquenchable

  • But by an effort of his unquenchable energy he shook off this show of concern.

    A Son of Hagar

    Sir Hall Caine

  • It was the cry of a beaten man whose spirit is unquenchable.

  • I have never seen fury so expressed or such an unquenchable spirit.

  • Is it not good news that that fire is unquenchable, that that worm will not die?

    Out of the Deep

    Charles Kingsley

  • But down to the last half-gallon, our thirst was unquenchable.

    Land of the Burnt Thigh

    Edith Eudora Kohl

British Dictionary definitions for unquenchable


verb (tr)
  1. to satisfy (one's thirst, desires, etc); slake
  2. to put out (a fire, flame, etc); extinguish
  3. to put down or quell; suppressto quench a rebellion
  4. to cool (hot metal) by plunging it into cold water
  5. physics to reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
  6. electronics
    1. to suppress (sparking) when the current is cut off in an inductive circuit
    2. to suppress (an oscillation or discharge) in a component or device
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Derived Formsquenchable, adjectivequencher, nounquenchless, adjective

Word Origin for quench

Old English ācwencan to extinguish; related to Old Frisian quinka to vanish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unquenchable


late 14c., of fire; 1560s, of thirst, from un- (1) "not" + quench + -able. Related: Unquenchably.

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Old English acwencan "to quench" (of fire, light), from Proto-Germanic *cwandjan, probably a causative form of root of Old English cwincan "to go out, be extinguished," Old Frisian kwinka. Related: Quenched; quenching.

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Online Etymology Dictionary, © 2010 Douglas Harper