Queen stops reprobate assuming command (9)
I believe the answer is:
imperious
'queen stops reprobate assuming command' is the definition.
I can't tell whether this definition defines the answer.
'queen stops reprobate assuming command' is the wordplay.
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'stops' indicates putting letters inside (stopping can mean blocking a gap).
'reprobate assuming command' becomes 'impious' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'er' placed within 'impious' is 'IMPERIOUS'.
Can you help me to learn more?
(Other definitions for imperious that I've seen before include "Haughty - domineering" , "Bossy" , "Arrogant, domineering" , "high-handed" .)