Having no ethics (6)
I believe the answer is:
amoral
'having no ethics' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for amoral that I've seen before include "Without sense of right and wrong" , "Unethical" , "Lacking any ethical standards" , "Without an ethical code" , "Ignoring what's right and wrong" .)