I.a waking vision, opp. to ὄναρ (a dream), οὐκ ὄναρ, ἀλλ᾽ ὕπαρ no illusive dream, but a reality, Od.; so Pind., Aesch.
II.the acc. is used as adv., in a waking state, awake, Plat.; ὄναρ ἢ ὕπαρ ζῆν to pass life asleep or awake, id=Plat.
2.ὕπαρ in reality, actually, id=Plat.