ἀληθινός

ή, όν, Adv.
A. agreeable to truth:
1. of persons, truthful, trusty, στράτευμα, φίλοι, X. An. 1.9.17, D. 9.12, cf. Posidipp. 26. Adv. ‐νῶς, φιλεῖν X. Smp. 9.5: Sup. ‐ώτατα Plb. 39.37.
2. of things, true, genuine, Pl. R. 499c, Arist. EN 1107a31 (Comp.); esp. of purple, πορφυρίς X. Oec. 10.3, cf. Edict.Diocl. 24.6; ἰχθύς Amph.26; πέλαγος Men. 65; λόγος Id. Sam. 114; τὰ ἀ. real objects, opp. τὰ γεγραμμένα, Arist. Pol. 1281b12; of persons, ἐς ἀ. ἄνδρ’ ἀποβῆναι to turn out a genuine man, Theoc. 13.15: Astron., true (opp. φαινόμενος apparent), of risings and settings, Autol. 1 Def. 1, al.
II. Adv. ‐νῶς truly, really, opp. γλίσχρως, Isoc. 5.142; ζῶντα ἀ. really alive, Pl. Ti. 19b; ἀ. γεγάμηκεν ; Antiph. 221.
2. honestly, straightforwardly, OGI 223.17 (Erythrae).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project