1.opp. to δίκαιος (sanctioned by human law), sanctioned by divine law, τὰ ὅσια καὶ δίκαια things of divine and human ordinance, Plat.; θεοὺς ὅσιόν τι δρᾶν to discharge a duty men owe the gods, Eur.
2.opp. to ἱερός (sacred to the gods), permitted or not.forbidden by divine law, ἱερὰ καὶ ὅσια things sacred and profane, Thuc., etc.:— ὅσιόν or ὅσιά [ἐστι], foll. by inf., it is lawful, fas est, Hdt., etc.; οὐκ ὅσιόν ἐστι nefas est, id=Hdt.; ὅσιον χωρίον a place which may be trodden without impiety, and so = βέβηλος, Lat. profanus, Ar.; so, ὅσια ποιέειν Hdt.; φρονεῖν Eur.
II.of persons, pious, devout, religious, Aesch., Eur., etc.