Minister is against taking island transport (5)
I believe the answer is:
vicar
'minister' is the definition.
(thesaurus)
'is against taking island transport' is the wordplay.
'is against' becomes 'v' (abbreviation for 'versus').
'taking' is a charade indicator (letters next to each other).
'island' becomes 'i'.
'transport' becomes 'car' (car is a kind of transport**).
'v'+'i'+'car'='VICAR'
(Other definitions for vicar that I've seen before include "Man with a dog collar" , "One preaches" , "Parish clergyman" , "Member of the clergy" , "Serviceman" .)