ἀμυδᾶναι

From LSJ

ἕτερος ἐξ ἑτέρου σοφός τό τε πάλαι τό τε νῦν → one gets his skill from another, now as in days of old

Source

Spanish (DGE)

[ἄμυτρον] ἀμυδᾶναι· κρύψαι Hsch.α 3827.