1.of motion, straight, direct, Lat. rectus, used by Hom. in this sense only in adv. ἰθύς (infr. II); ἰθείῃ τέχνῃ straightway, forthwith, Hdt.; ἰθεῖαν (sc. ὁδόν) straight on, Lat. recta (sc. via), id=Hdt.; ἐκ τῆς ἰθείης (sc. ὁδοῦ) outright, openly, id=Hdt.; κατ᾽ ἰθὺ εἶναι to be right over against, opposite, id=Hdt.
2.in moral sense, straight, straight-forward, just, ἰθεῖα γὰρ ἔσται [ἡ δίκη] Il.; ἰθείῃσι δίκαις Hes.: so in Sup. adv., δίκην ἰθύντατα εἰπεῖν to give judgment most fairly, Il.; so, πρήξιες ἰθύτεραι [υ^] Theogn.; ἰθύς τε καὶ δίκαιος Hdt.
II.ἰθύς, or less commonly ἰθύ, as adv., straight at, right at, c. gen. objecti, ἰθὺς Δαναῶν Il.; ἰθὺς κίεν οἴκου went straight towards the home, id=Il.; ἰθὺ τοῦ Ἴστρου Hdt.;—also, ἰθὺς πρὸς τεῖχος Il.; ἰθὺς ἐπὶ Θεσσαλίης Hdt.
2.absol., ἰθὺς φρονέων resolving to go straight on, Il.; ἰθὺς μαχέσασθαι to fight hand to hand, id=Il.; τέτραπτο πρὸς ἰθύ οἱ, i. e. προσετέτραπτό οἱ ἰθύ, he fronted him face to face, id=Il.:—of Time, straightway, Hdt.
3.ἰθέως, regul. adv., Hdt.