Holier-than-thou (4-9)
I believe the answer is:
self-righteous
'holier-than-thou' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for self-righteous that I've seen before include "Unready English monarch" , "Smug; figures he lost (anag.)" , "Smugly moralistic" , "Convinced that one is morally superior" .)