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

 

sanctimoniously

 adverb
adverb
BrE BrE//ˌsæŋktɪˈməʊniəsli//
 
; NAmE NAmE//ˌsæŋktɪˈmoʊniəsli//
 
(disapproving)
 
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in a way that gives the impression that you feel you are better and more moral than other people synonym self-righteously his sanctimoniously paternal style