Synonyms of the word

irreligious

• adj. Contrary to religious beliefs and practices.
• adj. Describing a conscious rejection of religion.
• adj. Having no relation to religion; nonreligious.

atheistic

• adj. of or relating to atheists or atheism.

atheistical

• adj. Of or relating to atheism; atheistic.

ethnic

• adj. Of or relating to a group of people having common racial, national, religious or cultural origins.
• adj. Belonging to a foreign culture.
• adj. Representative of a folk or traditional mode of expression.
• adj. (historical) Heathen, not Judeo-Christian-Muslim.
• n. An ethnic person, especially a foreigner or member of an immigrant community.
• n. An ethnic minority.
• n. (archaic) A heathen, a pagan.
• n. (in classical scholarship) the demonym of an Ancient Greek city.

heathen

• adj. Not adhering to an Abrahamic religion; pagan.
• adj. (by extension) Uncultured; uncivilized; savage, philistine.
• adj. Alternative letter-case form of Heathen (pertaining or adhering to the Germanic neo-pagan faith Heathenry).
• n. A person who does not follow an Abrahamic religion; a pagan.
• n. (by extension) An uncultured or uncivilized person, philistine.
• n. Alternative letter-case form of Heathen (an adherent of the Germanic neo-pagan faith of Heathenry).

heathenish

• adj. Sort-of or somewhat like a heathen.

impious

• adj. Not pious.
• adj. Lacking reverence or respect, especially towards a god.

lapsed

• v. simple past tense and past participle of lapse.
• adj. Discontinued; having ceased or gone out of use.
• adj. (of a person) Changed to a less valued condition or state; especially having lost one's religious faith.
• adj. (humorous) By extension, having changed a (secular) belief or adherence.
• adj. (archaic, of a legacy) Having passed from the original holder or authority; no longer claimed.

nonchurchgoing

• adj. Not attending church.

nonobservant

• adj. Not observant; not religious; not participating in the observance of religion.

pagan

• adj. Relating to, characteristic of or adhering to non-Abrahamist religions, (i.e. Christianity, Judaism, and…
• adj. (by extension, pejorative) Savage, immoral, uncivilized, wild.
• n. A person not adhering to any major or recognized religion, especially a heathen or non-Abrahamist (i.e…
• n. (by extension, pejorative, politically incorrect) An uncivilized or unsocialized person.
• n. (pejorative, politically incorrect) Especially an unruly, badly educated child.

unbelieving

• adj. That does not believe; incredulous, skeptical.

ungodly

• adj. Lacking reverence for God; impious.
• adj. Sinful, immoral or wicked.
• adj. (informal) Unreasonable; extreme.