Barbaric, cruel (7)
I believe the answer is:
inhuman
This clue is a double definition.
'barbaric' is the first definition.
(I've seen this before)
'cruel' is the second definition.
(inhuman can mean cruel or inhumane)
(Other definitions for inhuman that I've seen before include "Without compunction" , "Savage, brutal" , "Nasty" , "Animal" , "Pitiless - barbarous" .)