Roget's Thesaurus

#1. Existence

Nouns

existence, being, entity, ens [Lat.], esse [Lat.], subsistence. reality, actuality; positiveness etc. adj.; fact, matter of fact, sober reality; truth etc. 494; actual existence. presence etc. (existence in space) 186; coexistence etc. 120. stubborn fact, hard fact; not a dream etc. 515; no joke. center of life, essence, inmost nature, inner reality, vital principle. [Science of existence], ontology.

Verbs

exist, be; have being etc. n.; subsist, live, breathe, stand, obtain, be the case; occur etc. (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 etc. n.; arise etc. (begin) 66; come forth etc. (appear) 446. become etc. (be converted) 144; bring into existence etc. 161. abide, continue, endure, last, remain, stay.

Adjectives

existing etc. v.; existent, under the sun; in existence etc. n.; extant; afloat, afoot, on foot, current, prevalent; undestroyed. real, actual, positive, absolute; true etc. 494; substantial, substantive; self-existing, self-existent; essential. well-founded, well-grounded; unideal, unimagined; not potential etc. 2; authentic.

Adverbs

actually etc. adj.; in fact, in point of fact, in reality; indeed; de facto, ipso facto.

Phrases

ens rationis [Lat.]; ergo sum cogito [Lat.], thinkest thou existence doth depend on time? [Byron].