Irreligious
Irreligious , adjective
[Latin irreligiosus: compare French irréligieux.]
1.
Destitute of religion; not controlled by religious motives or principles; ungodly. Compare Impious.
Shame and reproach are generally the portion of the impious and irreligious.
2.
Indicating a lack of religion; profane; wicked; as, irreligious speech.