misbelieve

"Many older smokers misbelieve that they are too old to quit or too old to benefit from quitting."

Every human bond was severed by the guilt of heresy; children were taught to desert their parents, and even the sacrament of matrimony could not unite an orthodox wife to a misbelieving husband.

I misbelieve that'll ever be; don't see how it can be.

Misbelievers would have no rights under an orthodox State, and a misbelieving prince would have no authority over orthodox subjects.

Nor let the slow and misbelieving wight Doubt how the fire on the hard earth may seize; No more then how those waters erst did light Upon the sinfull world.