Snob (7)
I believe the answer is:
elitist
'snob' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elitist that I've seen before include "one snobbishly prefers" , "Reserved for the few" , "Member of a self-regarding group" , "Exclusive type" , "Snob" .)