| quench | (verb) suppress or crush completely | Synonyms: quell, squelch |
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| (verb) cool (hot metal) by plunging into cold water or other liquid | - |
| (verb) reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance | - |
| (verb) satisfy (thirst) | Synonyms: allay, assuage, slake |
| (verb) suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device | - |
| (verb) put out, as of fires, flames, or lights | Synonyms: blow out, extinguish, snuff out |