Herman likes to give the appearance of living this holier-than-thou life.
Unfortunately for Edwards, the holier-than-thou approach won her few fans.
There's going to be one house in this scandal-mongering town to-night that isn't going to spring the holier-than-thou.
I've watched the lot of you Cavendishes, with yer stuck-up 'holier-than-thou' ways.
Happily the generations of cant and holier-than-thou are passing, and we are looking history more honestly in the face.
To one who goes to Spain in the holier-than-thou attitude, she is dumb and repellent,—she who can be so eloquent!
She shrank from the holier-than-thou attitude; yet to remain quiet might be taken as approval.
This has been tried out successfully in many industrial enterprises, with happy surprise for the holier-than-thou skeptics.
But I don't want you to think you can get away with any holier-than-thou stuff.
There was no assumption of godliness nor conceit, no holier-than-thou smirk about the child.
as an adjectival phrase in reference to supercilious sanctimony attested by 1888, American English. The text is in Isaiah lxv:5.
Condescending; thinking one is superior to others: holier-than-thou attitude gains him no friends