1) of, like, imperialism; a supporter of, believer in, imperialism (imperialist)
2) a believer in, practiser of, mysticism (mystic)
3) a believer in optimism (optimist)
4) (not now used) (of) a person who is not a believer in any of the chief religions of the world (pagan)
a supporter (of an opinion, a political party)
supporter or follower
a person who gets help or advice from any professional person
customer
a person who is very interested in something
ardent supporter; fan
a person with a strong interest (in sports, games etc)
person active in interest
supporter; admirer
person who believes or has great interest
lay
amateur
a member of a parish
amateur person, not trained in religious or other profession