τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
adv.avec fermeté ou persévérance.Étymologie: ἔμμονος.
ἐμμόνως: постоянно, неустанно Plut.