The state of not existing; absence of existence; the negation of being; -- usually used with reference to existince in the real world, or logical possiblity; as, the nonexistence of vaporware does not go unnoticed long. A. Baxter. [1913 Webster]
A thing that has no existence. Sir T. Browne. [1913 Webster]

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ROGET THESAURUS

nonexistence

Inexistence

N inexistence, nonexistence, nonsubsistence, nonentity, nil, negativeness, nullity, nihility, nihilism, tabula rasa, blank, abeyance, absence, no such thing, nonbeing, nothingness, oblivion, annihilation, extinction, extinguishment, extirpation, Nirvana, obliteration, inexistent, nonexistent, negative, blank, missing, omitted, absent, insubstantial, shadowy, spectral, visionary, unreal, potential, virtual, baseless, in nubibus, unsubstantial, vain, unborn, uncreated, unbegotten, unconceived, unproduced, unmade, perished, annihilated extinct, exhausted, gone, lost, vanished, departed, gone with the wind, defunct, fabulous, ideal, supposititious &c, negatively, virtually, non ens.

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