1. (n.) Nihility; nonexistence.

2. (n.) The state of being of no value; a thing of no value.

KO absence acreage area blackout blank breadth catalepsy catatonia catatony clean slate coma continuum deprivation dimension emptiness empty space expanse expansion extension extent faint field galactic space grayout inanity infinite space interstellar space kayo knockout lipothymia lipothymy measure nada negation negativeness negativity nihility nirvana nirvana principle nonbeing nonentity nonexistence nonoccurrence nonreality nonsubsistence not-being nothing nullity oblivion obliviousness outer space proportion semiconsciousness senselessness sleep space spatial extension sphere spread stupor superficial extension surface swoon syncope tabula rasa tract unactuality unconsciousness unreality vacancy vacuity vacuum void volume