Lexical Definition

‎ὅσιος‎ hósios (hos'-ee-os) sacred ^G:A
of uncertain affinity; properly, right (by intrinsic or divine character; thus distinguished from 1342, which refers rather to human statutes and relations; from ‎ἱερός‎, which denotes formal consecration

holy, mercy, shalt be.

• and from ‎ἅγιος‎, which relates to purity from defilement), i.e. hallowed (pious, sacred, sure)

Abbott-Smith

ὅσιος, -ον (so sometimes in cl., but most freq. -α, -ον), [in LXX chiefly for חָסִיד, also for טָהוֹר, יָשָׁר, תָּמִים;]
religiously right, righteous, pious, Holy: of men, Tit 1:8, He 7:26; by meton., ὁ. χεῖρας, I Ti 2:8 (cf. De 32:4); of God, Re 15:4 16:5; as subst., ὁ ὅ., of the Messiah, Ac 2:27 13:35 (LXX); τὰ ὅ. Δανεὶδ τ. πιστά (Field, Notes, 121), Ac 13:34(LXX).†
SYN.: v.s. ἅγιος (cf. also DB, ii, 399b; iv, 352b, and ref. s.v. -ίως).

Abbott-Smith References

Liddell-Scott-Jones

ὅσιος-ος, α, ον,

also ος, ον [Refs 5th c.BC+]:— hallowed, i. e. sanctioned or allowed by the law of God or of nature, δίκη [Refs 6th c.BC+]; οὐχ ὅ. unhallowed, ὕβρις [Refs 5th c.BC+] —The sense of ὅσιοςος often depends on its relation on the one hand to δίκαιος (sanctioned by human law), on the other to ἱερός (sacred to the gods):

__1 opposed to δίκαιος, sanctioned by divine law, hallowed, holy (μόριον τοῦ δικαίου τὸ ὅ. [Refs 5th c.BC+] things of human and divine ordinance, [Refs 5th c.BC+]; θεοὺς ὅσιοςόν τι δρᾶν discharge a duty men owe the gods, [Refs 5th c.BC+]; τὸ ὅσιοςον, ={εὐσέβεια}, [Refs 5th c.BC+]: in an imprecatory formula, ἀποδοῦσι μὲν αὐτοῖς ὅσιοςα ᾖ, μὴ ἀποδοῦσι δὲ ἀνόσια [Refs]
__2 opposed to ἱερός, permitted or not forbidden by divine law, profane, ἱερὰ καὶ ὅ. things sacred and profane, ἐς ὀλιγωρίαν ἐτράποντο καὶ ἱερῶν καὶ ὁ. ὁμοίως [Refs 5th c.BC+]; κοσμεῖν τὴν πόλιν καὶ τοῖς ἱεροῖς καὶ τοῖς ὁ. with sacred and profane buildings, [Refs 5th c.BC+]; ὁ ταμίας τῶν ὁ. [Refs 3rd c.BC+]; ὅ. χωρίον a lawful place (for giving birth to a child), [Refs 5th c.BC+]; ὅσιοςόν ἐστι followed by infinitive, it is lawful, not forbidden by any law, [ὅσιοςόν ἐστι ">Refs 5th c.BC+]nefas est, [Refs 5th c.BC+]; οὐκ ὅσιοςον ποιεῦμαι I deem it impious, [Refs 4th c.BC+]; οὐδὲ ὅσιοςα (i.e. ἐστι).. μιαίνειν [ὅσιοςον.. ἱστάναι κτερίσματα 5th c.BC: Sophocles Tragicus “Electra” 432; ὅσιοςα ποιέειν 5th c.BC: Herodotus Historicus 6.86 ">Refs 5th c.BC+].α; λέγειν [Refs 5th c.BC+]
__II of persons, pious, devout, religious, ἄνδρες [Refs 5th c.BC+]; ὅ. θιασῶται, μύσται, [ὅσιοςοι πρὸς οὐ δικαίους ἱστάμεθα 5th c.BC: Thucydides Historicus 5.104 ">Refs 5th c.BC+]; opposed to ἀνόσιος, [Refs 5th c.BC+]; opposed to ἐπίορκος, [Refs 5th c.BC+]; ὅσιοςος εἴς τινα, περὶ ξένους, [Refs 5th c.BC+]
__II.2 sinless, pure, ἐξ ὁ. στομάτων [Refs 5th c.BC+]; ὅ. ἔστω καὶ εὐαγής Legal Solonis cited in [ὅσιοςος">Refs 5th c.BC+] in regard to the sacred rites of his forefathers, [ὅσιοςος ἀπ᾽ εὐνᾶς 5th c.BC: Euripides Tragicus “Ion” 150 (Lyric poetry)">Refs 5th c.BC+]; also ὅσιοςαι χέρες pure, clean hands, [Refs 5th c.BC+]
__II.3 rarely of the gods, holy, [Refs 5th c.AD+]
__II.4 title of five special priests at Delphi, [Refs 1st c.AD+]
__II.5 οἱ ὅσιοςοι 'the saints', [LXX]
__III adverb ὁσίως [Refs 5th c.BC+]; ὁ. ἂν ὑμῖν ἔχοι τοῦτον θύειν.. it would be right for you that he should.., [Refs 5th c.BC+]participle, ὁ. ἂν ἔχοι αὐτῷ μὴ δεχομένῳ.. [Refs]: comparative -ώτερον[Refs 5th c.BC+]: superlative, ὡς -ώτατα διαβιῶναι τὸν βίον [Refs 8th c.BC+]

_{LSJ Scripture Refs: LXX.Ps.29.4*}