forticulus
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
Latin > English (Lewis & Short)
fortĭcŭlus: a, um,
I adj. dim. [id.], somewhat bold, brave, or resolute (very rare): quamvis idem (Epicurus) forticulum se in torminibus praebeat, * Cic. Tusc. 2, 19, 45; App. M. 8, p. 212, 32: carmina, Aus. Idyll. 3 fin.>
Latin > French (Gaffiot 2016)
fortĭcŭlus, a, um (fortis), assez courageux : Cic. Tusc. 2, 45