Rude lover may be countermanded (9)
I believe the answer is:
overruled
'countermanded' is the definition.
(I've seen this before)
'rude lover may be' is the wordplay.
'may be' indicates anagramming the letters.
'rude'+'lover'='rudelover'
'rudelover' anagrammed gives 'OVERRULED'.
(Other definitions for overruled that I've seen before include "Reversed decision of" , "Forced to change a decision" , "Disallowed by exercising one's authority" , "Cancelled" , "Countermanded" .)