Skilful, dexterous (6)
I believe the answer is:
adroit
I believe this clue is a double definition.
'skilful' is the first definition.
(adroit can mean skilful or masterful)
'dexterous' is the second definition.
(similar in meaning)
(Other definitions for adroit that I've seen before include "Skilful, expert" , "Canny" , "resourceful" , "Quick and clever in action or thought" , "Quick and deft" .)