snooty
adjective informal uk/ˈsnuː.ti/ us/ˈsnuː.t̬i/
高傲自大的，目中无人的
behaving in an unfriendly way because you believe you are better than other people
She was one of those really snooty sales assistants that you often find in expensive shops. 她是那种目中无人、特爱摆谱的营业员，属于你在高档商店里经常能见到的那类人。