Miscreant used to being expelled (6)
I believe the answer is:
ousted
'being expelled' is the definition.
(I've seen this before)
'miscreant used to' is the wordplay.
'used to' anagrams to 'OUSTED'.
Though, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for ousted that I've seen before include "Offences against the law of the land" , "Put forcibly out of office" , "Thrown out" , "Removed from office (6)" , "Expelled from office or power" .)