Powerfully attractive (8)
I believe the answer is:
alluring
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">powerfully attractive</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 alluring that I've seen before include "Enticing" , "Seductive" , "Fascinating, attractive" , "Powerfully attractive" .)