Stuck-up (6)
'stuck-up' is the definition.
(I know that stuck-up can be written as snooty)
This is the entire clue.
(Other definitions for snooty that I've seen before include "Haughty, snobbish" , "Arrogantly superior" , "Stuck-up, bigheaded" , "Disdainful" , "No toys for being this uppity" .)
(Other definitions for snotty that I've seen before include "Midshipman" , "Conceited - foul with nasal discharge" , "Showing contempt, too big for one's breeches" , "Haughty" , "Conceited in attitude" .)
(Other definitions for snobby that I've seen before include "socially pretentious" , "superior" , "Snooty, stuck-up" .)