βελτύνω

From LSJ

κορυδός ἐν ἀμούσοις φθέγγεται → a lark sings amid the songless | in the land of the blind, the one-eyed man is king | in the country of the blind, the one-eyed man is king | in the valley of the blind, the one-eyed man is king

Source

Spanish (DGE)

mejorar τὰ ἐπιτηδεύματα ὑμῶν Aq.Ie.35.15.