Principled (7)
I believe the answer is:
ethical
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">principled</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ethical that I've seen before include "Relating to morals" , "Morally correct, in accordance with professional standards" , "Conforming to accepted standards of behaviour" , "Abiding by moral principles" , "Moral, honest" .)