30 entries under noun topic. ×

25
heathen(adjective, not, irreligion, unbelieving)
22
atheist(adjective, person, view, disbelieve)
20
pagan(adjective, person, irreligious, nonbeliever)
17
agnostic(adjective, irreligion, unbelieving, unbeliever)
12
gentile(adjective, irreligion, nonbeliever)
11
unbeliever(irreligion, unbeliever, nonbeliever)
9
heretic(adjective, unbeliever, nonbeliever)
8
freethinker(radical, irreligion)
7
disbeliever
5
nonbeliever
5
nullifidian
4
skeptic(person, irreligion, unbelieving, unbeliever)
4
sceptic
3
doubter
3
goy
2
cynic
2
idolater
1
dissenter
1
heathendom
1
infidels
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APASmart Define. (2015). infidel thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/infidel/thesaurus/synonyms
ChicagoSmart Define. 2015. "infidel thesaurus" https://smartdefine.org/infidel/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, infidel thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/infidel/thesaurus/synonyms>.
MLASmart Define. "infidel thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/infidel/thesaurus/synonyms>