omnicide

Etymology

From omni- (“all”) + -cide (“killing; killer”).

Why this word is great

OMNICIDE — [Noun] The total extinction of the human species as a result of human action, particularly through nuclear warfare or ecological catastrophe. From omni- ("all") + -cide ("killing; killer"), it is the ultimate terminus, the self-inflicted erasure of every last witness. Unlike "genocide" (which targets a specific group) or "ecocide" (which ravages ecosystems but leaves survivors possible), omnicide is the closing of the final ledger. It is the silent flash on the horizon, the last tree falling in a world stripped of oxygen, the empty chair at every future table—not just the end of lives, but the end of life’s very meaning.

noun

The total extinction of the human species as a result of human action, most commonly through nuclear warfare, but also through other means such as global anthropogenic ecological catastrophe.“Of course, civilization exacts a price, which we and our ancestors have been paying for millennia. But since the high technology of capitalism and the whip of the marketplace have become so efficient, the price has become correspondingly onerous. So onerous that the dread word “genocide” is being supplanted by even more ominous words—“omnicide” and “geocide.””
Someone or something that causes total destruction.“Our soils have been made sterile over many areas from pesticides, which have been really omnicides. Today, DDT as the greatest culprit, and one which has brought immense profit to the pesticide producing industry, has been spread worldwide.”