Insight (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">insight</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 acumen that I've seen before include "Mental keenness" , "Penetrating insight" , "Awareness" , "Gumption" , "'Keenness, depth of perception (6)'" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">insight</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for intuition that I've seen before include "Hunch" , "Suspicion" , "women are known for it" , "An indefinable knowledge" , "Unconscious understanding" .)