existence, being, entity, ens, esse, subsistence, reality, actuality; positiveness; fact, matter of fact, sober reality; truth; actual existence., presence (existence in space); coexistence., stubborn fact, hard fact; not a dream; no joke., center of life, essence, inmost nature, inner reality, vital principle [science of existence], ontology.
exist, be; have being; subsist, live, breathe, stand, obtain, be the case; occur (event); 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; arise (begin); come forth (appear)., become (be converted); bring into existence., abide, continue, endure, last, remain, stay.
existing existent, under the sun; in existence; extant; afloat, afoot, current, prevalent; undestroyed., real, actual, positive, absolute; true; substantial, substantive; self-existing, self-existent; essential., well-founded, well-grounded; unideal, unimagined; not potential; authentic.
actually; in fact, in point of fact, in reality; indeed; de facto, ipso facto.
ens rationis; ergo sum cogito ["I think therefore I am" (Latin)]; "thinkest thou existence doth depend on time?" [Byron]