Contrive dishonest outcome of snooker game (5)
I believe the answer is:
frame
I believe this clue is a double definition.
'contrive dishonest outcome' is the first definition.
(as in framing someone for a crime)
'snooker game' is the second definition.
(term for a game of snooker)
'of' is the link.
(Other definitions for frame that I've seen before include "mould" , "Unit of play in snooker tournament" , "Rigid part of a bicycle" , "Supporting, enclosing, structure" , "Snooker game; structure" .)