Lexical Definition

‎ἔνδικος‎ éndikos (en'-dee-kos) just ^G:A
from ‎ἐν‎ and ‎δίκη‎

just.

• in the right, i.e. equitable

Abbott-Smith

* ἔνδικος, -ον (< δίκη),
righteous, just: Ro 3:8, He 2:2 (Cremer, 204).†

Abbott-Smith References

Liddell-Scott-Jones

ἔνδικος-ος,

[Refs 4th c.AD+] ἴνδικος, ον, (δίκη):

__I of things, according to right, just, legitimate, [Refs 5th c.BC+]; γόος ἔ. [Refs 4th c.BC+]; κρίμα [NT+5th c.BC+]; μὴ λέγων γε τοὔνδικον not speaking truth, [Refs]
__I.2 legal, ἔ. ἡμέρα a court-day, [Refs 2nd c.AD+]
__I.2.b having a locus standi, μή οἱ ἔστω ἴνδικον μηδέποθι ἀλλ᾽ ἢ.. he shall not have the right to sue, [Refs 5th c.BC+]
__I.2.c ={ἔνοχος δίκα}, [Refs]
__I.2.d ἔ. πόλις a city in which justice is done, [Refs 5th c.BC+]; in which sales may be publicly registered, [Refs]
__II of persons, upright, just, [Refs 5th c.BC+]
__II.c dative, ἔ. γάμοις favourable to them, [Refs]
__II.2 possessed of right, τίς μᾶλλον ἐνδικώτερο; who has a better right? [Refs]
__III adverb -κως right, with justice, fairly, [Refs]: superlative -ώτατα[Refs 5th c.BC+]
__III.2 justly, naturally, as one has a right to expect, [Refs 5th c.BC+]

_{LSJ Scripture Refs: Rom.3.8}