straight, Lat. rectus:
I.in height, upright, erect, Hom., Hdt., attic; ὀρθὸν οὖς ἱστάναι, i. e. to give attentive ear, Soph.:—of buildings, standing with their walls entire, [τὸ Πάνακτον] ὀρθὸν παραδοῦναι Thuc.
II.in line, straight, right, ὀρθὸς ἀντ᾽ ἠελίοιο right opposite the sun, Hes.; ὀρθὴ ὁδός Theogn.; ὀρθὴν κελεύεις, i. e. ὀρθὴν ὁδόν με κελεύεις ἰέναι, Ar.; δι᾽ ὀρθῆς (sc. ὁδοῦ) Soph.:—also, ὀρθᾷ χερί, ὀρθῷ ποδί straightway, Pind.; but ὀρθὸν πόδα τιθέναι is prob. to put the foot out, as in walking (cf. κατηρεφής I), Aesch.
2.βλέπειν ὀρθά, to see straight, opp. to being blind, Soph.; so, ἐξ ὀμμάτων ὀρθῶν, ὀρθοῖς ὄμμασιν, Lat. rectis oculis, id=Soph.
III.metaph.,
1.right, safe, happy, prosperous:
a.from signf. 1, ὀρθὸν ἱστάναι τινά ῀ ὀρθοῦν, to set up, restore, Pind., Eur.; so, στάντες τ᾽ ἐς ὀρθὸν καὶ πεσόντες ὕστερον Soph.; πλεῖν ἐπ᾽ ὀρθῆς (sc. νεώς, the state being represented as a ship), id=Soph.
b.from signf. II, κατ᾽ ὀρθὸν ἐξελθεῖν, of prophecies, id=Soph.; κατ᾽ ὀρθὸν οὐρίσαι to waft in straight course, id=Soph.
2.right, true, correct, Pind., Aesch., etc.; ὄρθ᾽ ἀκούειν to be rightly called, Soph.; ὀρθῷ λόγῳ strictly speaking, in very truth, Hdt.:—so in adv., ὀρθῶς λέγειν id=Hdt.; ὀ. φράσαι Aesch., etc.; ὀρθῶς ἔχει 'tis right, c. inf., Plat.:—Sup. ὀρθότατα Hdt.
3.real, genuine, Arist.:— ὀρθῶς, really, truly, Plat.
4.upright, righteous, just, Soph., etc.; κατὰ τὸ ὀρθὸν δικάζειν Hdt.:—adv. ὀρθῶς, rightly, justly, Thuc.
5.of persons, steadfast, firm, Plat.
1.(sub. ὁδός), v. supr. II.
2.(sub. γωνία) a right angle, id=Plat., etc.
V.adv. ὀρθῶς, v. supr. III. 2-4.