τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
optineo optinere, optinui, optentus V :: get hold of; maintain; obtain; hold fast, occupy; prevail
optineo, s. obtineo.
optĭnĕō, v. obtineo.