Divine man cut curvy shape (5)
I believe the answer is:
guess
'divine' is the definition.
(divine can mean to guess or work out)
'man cut curvy shape' is the wordplay.
'man' becomes 'guy' (guy is a kind of man).
'cut' means to remove the last letter.
'curvy shape' becomes 'ess' (the letter S).
'guy' with its final letter removed is 'gu'.
'gu'+'ess'='GUESS'
(Other definitions for guess that I've seen before include "Estimate; suppose" , "Estimate, supposition" , "the Americans believe it" , "Fancy" , "Divine - estimate" .)