experto
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
Spanish > Greek
αἵμων, γνωμονικός, γνώμων, δαήμων, δεινός, δημιουργός, εἰδήμων, ἀγαθός, ἄκρος, ἐμπέραμος, ἐμπειρικός, ἔμπειρος, ἐπιστήμων