ἀμαθητεύτως
From LSJ
οὕτω τι βαθὺ καὶ μυστηριῶδες ἡ σιγὴ καὶ νηφάλιον, ἡ δὲ μέθη λάλον → silence is something profound and mysterious and sober, but drunkenness chatters
Spanish (DGE)
adv. sin educación μόνη δὲ ἡ τέχνη τῶν τεχνῶν ἀ. ἐπιτηδεύεται Nil.M.79.748D.