versed in
From LSJ
ἀλλ' εἰ μὲν ἁγνόν ἐστί σοι Πειθοῦς σέβας, γλώσσης ἐμῆς μείλιγμα καὶ θελκτήριον → but if you have holy reverence for Persuasion, the sweetness and charm of my tongue
English > Greek (Woodhouse)
adjective
P. and V. ἔμπειρος (gen.), ἐπιστήμων (gen.), ἐντριβής (dat.), Ar. and V. τρίβων (acc. or gen.), V. ἴδρις (gen.).
versed in speaking: P. and V. δεινὸς λέγειν, V. μουσικὸς λέγειν.
I am not versed in the customs of Greece: V. λέλειμμαι τῶν ἐν Ἕλλησιν νόμων (Eur., Helen 1246).