Refuse move out of order (4,4)
I believe the answer is:
turn down
'refuse' is the definition.
(synonyms)
'move out of order' is the wordplay.
'move' becomes 'turn' (turn is a kind of move).
'out of order' becomes 'down'.
'turn'+'down'='TURN-DOWN'
(Other definitions for turn down that I've seen before include "prepare bed" , "Reject - reduce volume" , "Refuse - to reduce the volume" , "mark the place" , "Dim - reject" .)