Roget's Thesaurus by Peter Mark Roget

#1. Existence.—N. existence, being, entity, _ens_, _esse_, subsistence. reality, actuality; positiveness &c. adj.; fact, matter of fact, sober reality; truth &c. 494; actual existence. presence &c. (existence in space) 186; coexistence &c. 120. stubborn fact, hard fact; not a dream &c. 515; no joke. center of life, essence, inmost nature, inner reality, vital principle. [Science of existence], ontology. V. exist, be; have being &c. n.; subsist, live, breathe, stand, obtain, be the case; occur &c. (event) 151; have place, prevail; find oneself, pass the time, vegetate. consist in, lie in; be comprised in, be contained in, be constituted by. come into existence &c. n.; arise &c. (begin) 66; come forth &c. (appear) 446. become &c. (be converted) 144; bring into existence &c. 161. abide, continue, endure, last, remain, stay. Adj. existing &c. v.; existent, under the sun; in existence &c. n.; extant; afloat, afoot, on foot, current, prevalent; undestroyed. real, actual, positive, absolute; true &c. 494; substantial, substantive; self-existing, self-existent; essential. well-founded, well-grounded; unideal[obs3], unimagined; not potential &c. 2; authentic. Adv. actually &c. adj.; in fact, in point of fact, in reality; indeed; _de facto, ipso facto_. Phr. _ens rationis; ergo sum cogito;_ "thinkest thou existence doth depend on time?" [Byron]. #2. Inexistence.—N. inexistence[obs3]; nonexistence, nonsubsistence; # nonentity, nil; negativeness &c. adj.; nullity; nihility[obs3], nihilism; tabula rasa[Lat], blank; abeyance; absence &c. 187; no such thing &c. 4; nonbeing, nothingness, oblivion. annihilation; extinction &c. (destruction) 162; extinguishment, extirpation, Nirvana, obliteration. V. not exist &c. 1; have no existence &c. 1; be null and void; cease to exist &c. 1; pass away, perish; be extinct, become extinct &c. adj.; die out; disappear &c. 449; melt away, dissolve, leave not a rack behind; go, be no more; die &c. 360. annihilate, render null, nullify; abrogate &c. 756; destroy &c. 162; take away; remove &c. (displace) 185; obliterate, extirpate. Adj. inexistent[obs3], nonexistent &c. 1; negative, blank; missing, omitted; absent &c. 187; insubstantial, shadowy, spectral, visionary. unreal, potential, virtual; baseless, in nubibus[Lat]; unsubstantial &c. 4; vain. unborn, uncreated[obs3], unbegotten, unconceived, unproduced, unmade. perished, annihilated, &c. v.; extinct, exhausted, gone, lost, vanished, departed, gone with the wind; defunct &c. (dead) 360. fabulous, ideal &c. (imaginary) 515, supposititious &c. 514. Adv. negatively, virtually &c. adj. Phr. non ens[Lat].