Prudent; wise (7)
I believe the answer is:
politic
I believe this clue is a double definition.
'prudent' is the first definition.
(I've seen this in another clue)
'wise' is the second definition.
(associated in meaning)
(Other definitions for politic that I've seen before include "Sensible, judicious" , "Wise, cautious" , "artful" , "Prudent, sagacious" , "Prudent, discreet" .)