Justin Taylor, my editor at Crossway, points out many people who use the word “hypocrisy” do not know what it actually means. It isn’t not practicing what you preach, but not believing what you say you do.
From How to Stop Misusing the Word “Hypocrisy” – Justin Taylor:
Boston College philosopher Peter Kreeft:
The common, modern misunderstanding of hypocrisy [is] not practicing what you preach. . . . Actually, we have misdefined “hypocrisy.” Hypocrisy is not the failure to practice what you preach but the failure to believe it. Hypocrisy is propaganda.
The great art critic William Hazlitt (1778-1830):
He is a hypocrite who professes what he does not believe; not he who does not practice all he wishes or approves.