Dictionary 1. (a.) Indifferent to religion; ungodly\; not controlled by religious motives or principles.2. (a.) Indicating a want of religion; profane; wicked; as, irreligious speech. Thesaurus 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 |