31
sinful(adjective, evil, wicked, immoral, deceitful)
21
impious(adjective, evil, naughty, religious, profane)
17
heathen(adjective, not, ungodly, irreverent, unbelieving)
17
irreverent(adjective, wicked, immoral, deceitful, profane)
17
profane(adjective, bad, wrong, evil, wicked)
17
sacrilegious(adjective, wicked, immoral, deceitful, profane)
17
ungodly(adjective, bad, evil, wicked, deceitful)
15
blasphemous(adjective, wicked, immoral, deceitful, impiety)
15
godless(adjective, wicked, immoral, deceitful, god)
13
atheistic(adjective, wicked, immoral, deceitful, ungodly)
13
unholy(adjective, bad, evil, corrupt, wicked)
11
faithless(adjective, ungodly, unbelieving, unspiritual)
11
pagan(adjective, barbarian, ungodly, irreverent, blasphemous)
11
wicked(adjective, bad, evil, corrupt, immoral)
10
unbelieving(adjective, ungodly, disbelieving, unspiritual)
8
agnostic(adjective, wicked, immoral, deceitful, barbarian)
7
iniquitous(adjective, bad, evil, wicked, immoral)
6
atheist
6
materialistic(religion, feature, person)
6
undevout(adjective, ungodly, irreligion, unspiritual)
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APASmart Define. (2016). irreligious thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/irreligious/thesaurus/synonyms
ChicagoSmart Define. 2016. "irreligious thesaurus" https://smartdefine.org/irreligious/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, irreligious thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/irreligious/thesaurus/synonyms>.
MLASmart Define. "irreligious thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/irreligious/thesaurus/synonyms>