Style to copy on the quiet? (5)
I believe the answer is:
shape
'style' is the definition.
(thesaurus)
'copy on the quiet?' is the wordplay.
'copy' becomes 'ape' ('ape' can be a synonym of 'copy').
'on' is a charade indicator (letters next to each other).
'the quiet?' becomes 'sh'.
'ape' put after 'sh' is 'SHAPE'.
'to' is the link.
(Other definitions for shape that I've seen before include "Form, figure" , "Form; mould" , "External form" , "Mould into new phase" , "For good physical condition" .)