Disdain shown by prisoner over lure (8)
I believe the answer is:
contempt
'disdain' is the definition.
('contempt' can be a synonym of 'disdain')
'prisoner over lure' is the wordplay.
'prisoner' becomes 'con' (abbreviation for 'convict').
'over' is a charade indicator (letters next to each other).
'lure' becomes 'tempt' ('tempt' can be a synonym of 'lure').
'con'+'tempt'='CONTEMPT'
'shown by' acts as a link.
(Other definitions for contempt that I've seen before include "In which you may be held" , "Disobedience to the rules of a court of law" , "Open disrespect, to a court, say" , "ridicule" , "Disdain, scorn" .)