- The definition of sanctimonious involves making a big show about how you are better or morally superior to others.
An example of sanctimonious is someone who always goes on and on about how he does tons of charity work and is such a great person.
Origin of sanctimonious; from sanctimony + -ous
- Behaving with sanctimony: a sanctimonious politician who was proven to be a hypocrite.
- Characterized by sanctimony: “The history we brandish as a light to nations is largely a sanctimonious tissue of myth and self-infatuation” (Benjamin Schwartz).
(comparative more sanctimonious, superlative most sanctimonious)