Missionary's target (5)
I believe the answer is:
pagan
'missionary's target' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pagan that I've seen before include "advocate of pleasures" , "Unchristian" , "Polytheist" , "Person without any conventional religion" , "One who follows a polytheistic or pre-Christian religion, but not a Jew" .)