Irreligious

a.	1.
	1.	Destitute of religion; not controlled by religious motives or principles; ungodly. Cf. Impious. Shame and reproach are generally the portion of the impious and irreligious. - South.
	2.	Indicating a lack of religion; profane; wicked; as, irreligious speech.

Adj.

1.

irreligious - hostile or indifferent to religion Antonyms: religious - having or showing belief in and reverence for a deity; "a religious man"; "religious attitude"

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