extinction Synonyms

extermination demise ruin elimination defunctness destruction obliteration disappearance termination eradication end downfall vanishing extinguishing perishing quenching annihilation extirpation death unbeing oblivion occultation truncation overthrow passing rasure suppression suffocation snuffing silencing putridness putting out quietus ruination vanishment loss of life operant conditioning spoilation dying out experimental extinction last roundup end of life absorbance lights-out nonbeing last out shutout mincemeat Ragnarok grim reaper