-ist

(Greek > Latin: a suffix; one who believes in; one who is engaged in; someone who does something)

realistic
1. Tending to or expressing an awareness of things as they really are: "The doctor tried to give him a realistic appraisal of his chances of surviving the operation."
2. Of or relating to the representation of objects, actions, or social conditions as they actually are.
3. A reference to seeking what is achievable or possible, based on known facts.
4. Simulating real things or imaginary things in a way that seems real; such as, computer games with realistic graphics.
3. Trying to be reasonable; such as, having a realistic price for something that is not priced or valued too low or high.
4. In the arts and literature, representing life as it really is, rather than an idealized version of it.
rebaptist
receptionist (s) (noun), receptionists (pl)
repudiationist
Someone who repudiates an action or situation to which he/she rejects.
revelationist
revisionist
1. Any advocate of doctrines, theories, or practices that depart from the established authority or doctrine.
2. Someone who attempts to reevaluate and to restate the past based on newly acquired standards.
3. A member of a movement who re-examines historical information based on current knowledge.
revivalist
1. A promoter, organizer, or preacher of the Bible, at a religious revival meeting; especially, such a meeting for evangelical Christians.
2. Someone who wishes to revive customs, ideas, or institutions.
revolutionist
rhabdoidephilist
A collector of oddly shaped twigs.
rhabdomantist
Someone who searches for underground water or minerals by using a dowsing rod.
rhapsodist
rheologist
rheumatist
rheumatologist
rhinologist
A specialist in rhinology.