true
From LSJ
English > Greek (Woodhouse)
adj.
P. and V. ἀληθής, ὀρθός, Ar. and V. ἔτυμος (also Plat., Phaedr. 260E, but rare P.), ἐτήτυμος, V. ναμερτής.
Unlying: P. and V. ἀψευδής, V. σαφής.
Genuine: P. and V. γνήσιος P. ἀληθινός ἀκίβδηλος.
Faithful: P. and V. πιστός βέβαιος.
True-born: P. and V. γνήσιος, V. ἰθαγενής.
True story, as opposed to a myth: P. λόγος, ὁ opposed to μῦθος (Plat., Gorg. 523A).
Come true, be fulfilled, v.: P. and V. ἐκβαίνειν, V. ἐξέρχεσθαι, ἐξήκειν, P. ἀποβαίνειν.