Sinful habit (4)
I believe the answer is:
vice
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sinful habit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for vice that I've seen before include "Sin; weakness" , "perversion" , "Gripping tool - bad habit" , "Wrong" , "Strong gripper" .)