the word sanctimonious is another word for big headed,self riteous, bitch, etc. sanctimonious peoplethink they're it and act like it. they go around thinking they're brilliant, being sanctimonious is not a good thing!!
'oh she's such a sanctimonious bitch' observing somebody who is sanctimonious
'why are you so sanctimonious?!?!'why are you so stuck up your own ass?