Remove monastic devotee adopting revised rite (10)
I believe the answer is:
obliterate
'remove' is the definition.
(thesaurus)
'monastic devotee adopting revised rite' is the wordplay.
'monastic devotee' becomes 'oblate' (person who leads a monastic life without vows).
'adopting' indicates putting letters inside.
'revised' indicates an anagram.
'rite' is an anagram of 'iter'.
'oblate' going around 'iter' is 'OBLITERATE'.
(Other definitions for obliterate that I've seen before include "rub out" , "Eradicate" , "Annihilate" , "Utterly destroy" , "Destroy all traces" .)