1. Unbelieving, heretical
2. Depraved, villainous
ETYM Old Fren. mescreant, French mécréant; pref. mes- (Latin minus less) + p. pr. from Latin credere to believe. Related to Creed.
1. One who holds a false religious faith; an atheist.
2. One not restrained by Christian principles; an unscrupulous villain; a vile wretch.