τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
P. ἀνεπιεικής.
unequal: P. ἄνισος.
unjust: P. and V. ἄδικος, οὐκ ὀρθός; see unjust.
unreasonable: P. ἄλογος.