American English

Definition of supercilious adjective from the Oxford Advanced American Dictionary

     

    supercilious

     adjective
    adjective
    NAmE//ˌsupərˈsɪliəs//
     
    (disapproving)
     
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  1. 1behaving toward other people as if you think you are better than they are synonym superior
  2. 2 The jewelry store clerk was very supercilious. She gave a supercilious smile.
superciliously
 
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adverb
superciliousness
 
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noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: supercilious