Instinctive knowledge (9)
I believe the answer is:
intuition
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">instinctive knowledge</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for intuition that I've seen before include "An indefinable knowledge" , "Unjustified belief" , "Instinct" , "an instinctive thing" , "Unconscious understanding" .)