ἀλήθητος

From LSJ

Ὁ μὲν βίος βραχύς, ἡ δὲ τέχνη μακρή, ὁ δὲ καιρὸς ὀξύς, ἡ δὲ πεῖρα σφαλερή, ἡ δὲ κρίσις χαλεπή → Life is short, art long, opportunity fleeting, experience misleading and judgment difficult

Source

Spanish (DGE)

-ον
prob. auténtico, manifiesto glos. a ἀλίαστος Sch.Opp.C.3.115.