Word Study
self-righteous
OXFORD DICTIONARY
self-righteous, adj. excessively conscious of or insistent on one's rectitude, correctness, etc.
Derivative
self-righteously adv. self-righteousness n.
THESAURUS
self-righteous
Tartuffian, Tartuffish, affected, canting, complacent, false, goody, goody-goody, holier-than-thou, hypocritical, insincere, mealy-mouthed, mealymouthed, pecksniffian, pharisaic, pharisaical, pi, pietistic, pious, priggish, sanctified, sanctimonious, self-satisfied, smug, sniveling, superior, unctuousFor further exploring for "self-righteous" in Webster Dictionary Online