ἀλήθητος

From LSJ

τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies

Source

Spanish (DGE)

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