Keen intelligence (3)
I believe the answer is:
wit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">keen intelligence</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 wit that I've seen before include "Good sense" , "Repartee" , "Maker of clever remarks" , "Ingenuity or verbal fun" , "Mental ability" .)