Ethically unconcerned (6)
I believe the answer is:
amoral
'ethically unconcerned' 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" , "Unaffected by any sense of right and wrong" , "Unscrupulous" , "Lacking any ethical sense" , "Without sense of right and wrong" .)