Sly trick (4)
I believe the answer is:
wile
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sly trick</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wile that I've seen before include "Coax - pleasing artifice" , "Trick, stratagem" , "Chicanery" , "Artfulness" , "Cunning ruse" .)