Definition of superciliously adverb from the Oxford Advanced Learner's Dictionary

 

superciliously

 adverb
adverb
BrE BrE//ˌsuːpəˈsɪliəsli//
 
, BrE//ˌsjuːpəˈsɪliəsli//
 
; NAmE NAmE//ˌsuːpərˈsɪliəsli//
 
(disapproving)
 
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in a way that shows that somebody thinks they are better than other people