Cunning, cleverness (5)
I believe the answer is:
guile
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">cunning</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that cunning can be written as guile)</span><br/ ><br/ >'<span class="explanation-format__original">cleverness</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for guile that I've seen before include "Cunning intelligence" , "Slyness" , "Crafty behaviour" , "Deceitful cunning" , "Artfulness, cunning" .)