adjective
having or characterized by a strong belief in one's own righteousness and a tendency to act in a morally superior way
-
She often comes across as self-righteous, always quick to judge others.
-
Don't be so self-righteous, nobody likes a know-it-all.
-
Stop being so self-righteous, you're not perfect either.
-
His self-righteous attitude was like a shield, protecting him from criticism.