Synonyms and related words :
amoral, apostate, atheistic, backsliding, blasphemous, creedless, disbelieving, faithless, fallen, fallen from grace, godless, heretical, impious, incredulous, indevout, irreverent, lapsed, minimifidian, nonbelieving, nonreligious, nullifidian, profanatory, profane, recidivist, recidivistic, recreant, renegade, repudiative, sacrilegious, sinful, un-Christly, unangelic, unbelieving, unchristian, unconfident, unconverted, unconvinced, undevout, undutiful, ungodly, unholy, unmoral, unreligious, unrighteous, unsaintly, wicked, without faith