佢好惡, 英文點講?

佢好惡, 英文點講?
He is such a mean guy.
He is fierce

佢好惡 = He is a fierce person !
wide
savage
ferocious
menacing
fearful
threatening
violent
brutal
cruel
merciless
raging
furious
horrible
terrible
All above are adjective, so you have to add something like:
He is a XXXX person.

惡
1.evil; wickedness
2.wicked
1.to loathe