to put out (a fire, light, etc.); put out the flame of (something burning or lighted)

to extinguish a candle.

to put an end to or bring to an end; wipe out of existence; annihilate

to extinguish hope.

to obscure or eclipse, as by superior brilliance.

Law . to discharge (a debt), as by payment.

noun

eradication , extermination , extinction , extirpation , liquidation , obliteration , abolishment , abrogation , annihilation , annulment , cancellation , defeasance , invalidation , negation , nullification , voidance