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quench (v.)

Middle English quenchen, "to extinguish, put out" (heat, light, fire, also of desire, hunger, thirst), also figurative, "to bring to naught, eliminate, render ineffectual" (c. 1200), Old English acwencan "to quench" (of fire, light), from Proto-Germanic *kwenkjanan, probably a causative form from the source of Old English cwincan "to go out, be extinguished," Old Frisian kwinka. No certain cognates outside Germanic; perhaps a substratum word. Especially "to cool or extinguish by means of cold water," hence "to drench in water" (late 15c.). Related: Quenched; quenching.

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Definitions of quench from WordNet

quench (v.)
satisfy (thirst);
The cold water quenched his thirst
Synonyms: slake / allay / assuage
quench (v.)
put out, as of fires, flames, or lights;
quench the flames
Synonyms: snuff out / blow out / extinguish
quench (v.)
electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device;
quench (v.)
suppress or crush completely;
quench a rebellion
Synonyms: squelch / quell
quench (v.)
reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance;
quench (v.)
cool (hot metal) by plunging into cold water or other liquid;
quench steel
From wordnet.princeton.edu