Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
αἴτιος, ἐπίστροφος, εἰσηγητής, ἐσηγητής, μήστωρ, ἐξηγητής, ἐπιΐστωρ, πράκτωρ, ῥεκτήρ, αὐτόχειρ