Ingenuity, trickery (8)
I believe the answer is:
artifice
I believe this is a double definition.
'ingenuity' is the first definition.
(I've seen this in another clue)
'trickery' is the second definition.
(I've seen this before)
(Other definitions for artifice that I've seen before include "Ingenious stratagem" , "Clever trick intended to mislead" , "Clever contrivance" , "Deceptive manoeuvre, ruse" , "Crafty trick - if I react (anag)" .)