əˈleɪ əˈsweɪdʒ ɪkˈstɪŋ.ɡwɪʃ kwɛnt͡ʃ ˈskwɛltʃ cool (hot metal) by plunging into cold water or other liquid quench steel reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance suppress or crush completely squelch any sign of dissent quench a rebellion satisfy (thirst) The cold water quenched his thirst suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device put out, as of fires, flames, or lights Too big to be extinguished at once, the forest fires at best could be contained quench the flames snuff out the candles