Tramp unsettled a priest (7)
I believe the answer is:
traipse
'tramp' is the definition.
(thesaurus)
'unsettled a priest' is the wordplay.
'unsettled' is an anagram indicator.
'a'+'priest'='apriest'
'apriest' with letters rearranged gives 'TRAIPSE'.
(Other definitions for traipse that I've seen before include "Trudge or tramp in parties" , "Walk about wearily" , "Parties (anag.)" , "laborious walk" , "Trudge around" .)