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