Try Our Apps


Supposedly vs. Supposably


[kwench] /kwɛntʃ/
verb (used with object)
to slake, satisfy, or allay (thirst, desires, passion, etc.).
to put out or extinguish (fire, flames, etc.).
to cool suddenly by plunging into a liquid, as in tempering steel by immersion in water.
to subdue or destroy; overcome; quell:
to quench an uprising.
Electronics. to terminate (the flow of electrons in a vacuum tube) by application of a voltage.
Origin of quench
1150-1200; Middle English quenchen, earlier cwenken; compare Old English -cwencan in ācwencan to quench (cf. a-3)
Related forms
quenchable, adjective
quenchableness, noun
quencher, noun
unquenchable, adjective
unquenched, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for quenching
Historical Examples
British Dictionary definitions for quenching


verb (transitive)
to satisfy (one's thirst, desires, etc); slake
to put out (a fire, flame, etc); extinguish
to put down or quell; suppress: to quench a rebellion
to cool (hot metal) by plunging it into cold water
(physics) to reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
  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
Derived Forms
quenchable, adjective
quencher, noun
quenchless, adjective
Word Origin
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
Cite This Source
Word Origin and History for quenching



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.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
quenching in Medicine

quenching quench·ing (kwěn'chĭng)

  1. The process of extinguishing, removing, or diminishing a physical property such as heat or light.

  2. The shifting of the energy spectrum from a true to a lower energy that occurs in liquid scintillation counting of beta emissions; caused by interfering materials in the counting solution, including foreign chemicals.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for quench

Many English speakers likely know this word

Word Value for quenching

Scrabble Words With Friends

Nearby words for quenching