Artful, shrewd (7)
I believe the answer is:
politic
I believe this clue is a double definition.
'artful' is the first definition.
(I've seen this before)
'shrewd' is the second definition.
(similar in meaning)
(Other definitions for politic that I've seen before include "Prudent, discreet" , "Sensible, judicious" , "Diplomatic" , "artful" , "Shrewdly tactful" .)