Minister in vicious circle? (6)
I believe the answer is:
cleric
'minister' is the definition.
(thesaurus)
'vicious circle' is the wordplay.
'vicious' indicates anagramming the letters.
'circle' is an anagram of 'CLERIC'.
'in' acts as a link.
(Other definitions for cleric that I've seen before include "Church minister" , "Person in holy orders" , "Man of the cloth" , "Religious official" , "Church official" .)