ἀπερίεργος
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
English (LSJ)
ον,
A not over-busy, artless, simple, Hp. Decent.3; ἀγωγή Gal.13.168; of things, Dsc.Eup.1.35, Sor.2.11; ἀφελὴς καὶ ἀ. χρῆσις Ath.6.274a: Sup., ib.b; τὸ ἀ. simplicity, Plu.2.1144f, Ach.Tat.5.27. Adv. -γως Ceb.21, D.H.Dem.9, Sor.1.46, S.E. P.1.240, Ael.VH12.1.