Groups of clerics out of order (7)
I believe the answer is:
circles
'groups' is the definition.
(circle is a kind of group)
'clerics out of order' is the wordplay.
'out of order' indicates anagramming the letters.
'clerics' is an anagram of 'CIRCLES'.
'of' is the link.
(Other definitions for circles that I've seen before include "Surrounds" , "Figures" , "Rings" , "Cliques in which people move" .)