/ Dictionary / Index H holier-than-thou: Meaning and Definition of Find definitions for: ho•li•er-than-thou Pronunciation: (hō'lē-ur-un-ou'), [key] — adj. obnoxiously pious; sanctimonious; self-righteous. —n. a person who is obnoxiously pious or self-righteous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: holier-than-thou (Thesaurus) holidaymaker holily Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language