Unconcerned with right and wrong (6)
I believe the answer is:
amoral
'unconcerned with right and wrong' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for amoral that I've seen before include "Lacking principles" , "unconcerned about ethics" , "Ignoring what's right and wrong" , "Unscrupulous" , "Not knowing right or wrong" .)