Quisling (7)
I believe the answer is:
traitor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quisling</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for traitor that I've seen before include "Double-crosser" , "Disloyal person" , "Treasonous individual" , "Maclean was one" , "Judas" .)