apacible
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
Spanish > Greek
βληχρός, γαλερός, γαληνός, εἰρηναῖος, εἰρηνικός, εἰρηνόφρων, ἀκύμαντος, ἀλκυόνειος, ἄρθμιος