DictionarysanctimonySelf-righteousness
noun

sanctimony

SANK-tuh-moh-nee/sˈæŋktɪmˌoʊni/

A show of being morally better than others.

The man's sanctimony shows as he lectures about litter while dropping his own wrapper.

An older man pompously lectures another park visitor about littering while covertly dropping his own snack wrapper behind his back.
Etymology

Latin sanctimonia meant genuine holiness or virtuousness. English sanctimony shifted from piety itself to an outward, affected display of it, giving the word its critical force.

In context

misesmedia43:11
this is moral sanctimony like i've never seen before right they believe they're morally correct
Fighting Back: My Legal and Ethical Battle against Covid Mandates | Todd Zywicki

More examples

  • His apology sounds more like sanctimony than regret.
  • Voters tire of the candidate's sanctimony about family values.
  • You can encourage recycling without the sanctimony.

Forms

sanctimony

sanctimonious adjective — Acting as though morally better than others.

Similar words

self-righteousness
Emphasizes certainty in one's virtue rather than its display.
hypocrisy
Involves conduct contradicting professed beliefs, not necessarily moral superiority.