A.in Hom. and early writers,
I.of persons, observant of custom and social rule, well-ordered, civilised, Od.; so, δικαίη ζόη a regular way of living, Hdt.:—adv., δικαίως μνᾶσθαι to woo in due form, decently, Od.
2.observant of right, righteous, Hom., etc.:—so of actions, in accordance with right, righteous, id=Hom.
B.later usage:
I.of things, even, well-balanced, ἅρμα δίκαιον Xen.:— regular, exact, rigid, ὀργυιαὶ δίκαιαι Hdt.; τῷ δικαιοτάτῳ τῶν λόγων to speak quite exactly, id=Hdt.; πάντα δικαίως τετήρηται Dem.
2.right, lawful, just, τὸ δίκαιον right, opp. to τὸ ἄδικον, Hdt., etc.; also, a right, a lawful claim, Thuc., etc.:—adv. -ως, rightly, justly, Hdt., etc.
II.of persons, as well as things, like Lat. justus, meet, right, fitting, Aesch.; ἵππον δ. ποιεῖσθαί τινι to make a horse fit for another's use, Xen.
2.real, genuine, true, Dem., συγγραφεύς Luc.:—adv. -ως, really and truly, Soph.
C.in Prose, δίκαιός εἰμι with inf., δίκαιοί ἐστε ἰέναι you are bound to come, Hdt.; δ. εἰμι κολάζειν I have a right to punish, Ar.; δίκαιοί εἰσι ἀπιστότατοι εἶναι they have reason to be most distrustful, Thuc.; δ. ἐστιν ἀπολωλέναι dignus est qui pereat, Dem.:—we should say δίκαιόν ἐστι, which also occurs.