1. 消灭，消除(分歧等)
To snuff out something such as a disagreement means to stop it, usually in a forceful or sudden way.

2. (用手)掐灭;(用物件)弄熄
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.

3. 谋杀;干掉
If someone snuffs out someone else, they kill them.

1. put an end to
kill

e.g. The Nazis snuffed out the life of many Jewish children

Synonym: extinguish

2. put out, as of fires, flames, or lights

e.g. Too big to be extinguished at once, the forest fires at best could be contained
quench the flames
snuff out the candles

Synonym: blow outextinguishquench