Impressive skill and delicacy (7)
I believe the answer is:
finesse
'impressive skill and delicacy' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for finesse that I've seen before include "Skilful elegance or expertise" , "Impressive skill and delicacy" , "Adroitness" , "subtle tactic" , "Refinement" .)