To snuff out something such as a disagreement means to stop it, usually in a forceful or sudden way. Every time a new flicker of resistance appeared, the government snuffed it out The recent rebound in mortgage rates could snuff out the housing recovery
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
If you snuff out a small flame, you stop it burning, usually by using your fingers or by covering it with something for a few seconds. Tenzin snuffed out the candle