Stuck-up person (4)
I believe the answer is:
snob
'stuck-up person' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for snob that I've seen before include "High-minded type" , "Arrogant person" , "Stuck-up person" , "Person who considers himself socially superior" , "Toffee-nose" .)