Miscreant

Part of speech: noun (n.)

1. One who holds a false religious faith; a misbeliever. [Obs.] Spenser. De Quincey. Thou oughtest not to be slothful to the destruction of the miscreants, but to constrain them to obey our Lord God. Rivers.

2. One not restrained by Christian principles; an unscrupulous villain; a while wretch. Addison.

Part of speech: adjective (a.)

1. Holding a false religious faith.

2. Destitute of conscience; unscrupulous. Pope.