Canny, shrewd (6)
I believe the answer is:
astute
I believe this is a double definition.
'canny' is the first definition.
(I've seen this before)
'shrewd' is the second definition.
(I know that shrewd can be written as astute)
(Other definitions for astute that I've seen before include "Canny and sagacious" , "Clever and crafty" , "Statue (anag)" , "Smart and canny" , "intelligent" .)