snootily       
adverb uk/ˈsnuː.tə.li/ us/ˈsnuː.t̬ə.li/
 高傲自大地,目中无人地
in a way that is snooty (= unfriendly because you think you are better than other people)
  He was approached by a shop assistant who asked, snootily, if he could be of any assistance.  一位店员走近他,傲慢地问他是否可以提供任何帮助。 
 The shop rather snootily refused to accept credit cards until a few years back.  这家商店曾傲慢地拒绝接受信用卡,直到几年前才改进服务。 
 See: snooty
 - More examples
 - He snootily refused the prestigious post of deputy mayor.
 - The woman behind the counter informed me snootily that I would not find what I was looking for in her shop.
 - The UK snootily declined to participate in the venture.