Definition of holier-than-thou adjective from the Oxford Advanced American Dictionary

     

    holier-than-thou

     adjective
    adjective
    NAmE//ˌhoʊliər ðən ˈðaʊ//
     
    (disapproving)
     
    jump to other results
  1. 1showing that you think that you are morally better than other people synonym self-righteous
  2. 2 I can't stand his holier-than-thou attitude.
See the Oxford Advanced Learner's Dictionary entry: holier-than-thou