Sharp form of statue (6)
I believe the answer is:
astute
'sharp' is the definition.
(I know that sharp can be written as astute)
'form of statue' is the wordplay.
'form of' indicates anagramming the letters (the letters need to be in another 'form').
'statue' is an anagram of 'ASTUTE'.
(Other definitions for astute that I've seen before include "Nymph who was transformed into a laurel tree to escape Apollo" , "Smart and canny" , "Statue (anag)" , "Wide" , "Able to make accurate assessments" .)