(n.) The act of suffocating, or the state of being suffocated; death caused by smothering or choking.

abolishment abolition annihilation annulment asphyxia asphyxiation burking choke choking choking off deracination drowning elimination eradication extermination extinction extinguishment extirpation garrote killing liquidation liver death megadeath negation nullification purge rooting out serum death silencing smotheration smothering snuffing out starvation stifling strangling strangulation suppression throttling uprooting violent death voiding watery grave