Religious adherent (5)
I believe the answer is:
hindu
'religious adherent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hindu that I've seen before include "Religious believer" , "Swami, perhaps" , "Adherent to dominant religion of India" , "Adherent of Indian religion" , "One expecting to be reincarnated" .)