IRRELIG'IOUS, adjective Destitute of religious principles; condemning religion; impious; ungodly. Shame and reproach are generally the portion of the impious and irreligious 1. Contrary to religion; profane; impious; wicked; as an irreligious speech; irreligious conduct.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI