With no sense of right or wrong (6)
I believe the answer is:
amoral
'with no sense of right or wrong' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for amoral that I've seen before include "Lacking any ethical standards" , "Blind to right and wrong" , "Not knowing right or wrong" , "Having no code of ethics" , "Shameless" .)