ho·li·er-than-thou. adj. Exhibiting an attitude of superior virtue; self-righteously pious. Self-righteousness (also called sanctimoniousness, sententiousness, a holier-than-thou attitude) is a feeling of (usually) smug moral superiority derived from a sense that one's beliefs, actions, or affiliations are of greater virtue than those of the average person. Take the test. Good luck. The Holy Test - Are You Holier Than Thou? Your score is 42. Congratulations, you have passed the Hypocrite Test! You are officially Unholier Than Thou. The world is a happier place with you in it.