Vile male has the power to control monarch no longer (9)
I believe the answer is:
miserable
'vile' is the definition.
(synonyms)
'male has the power to control monarch no longer' is the wordplay.
I cannot really see how this works, but
'male' could be 'm' (common abbreviation) and 'm' is present in the answer.
'monarch' could be 'er' (abbreviation for Elizabeth Regina, British Queen) and 'er' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for miserable that I've seen before include "Depressed" , "sorrowful" , "Wretched, low" , "Being sad" , "Wretched, doleful" .)