Keen judgment or sense (6)
I believe the answer is:
acumen
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">keen judgment</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">sense</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for acumen that I've seen before include "ability to make good judgements" , "Cleverness in business" , "Shrewdness, intelligence in business" , "Intellectual sharpness as in business" , "Shrewdness, sharpness of mind" .)