7 entries under infidel topic. ×

17
irreligious(adjective, not, ungodly, irreverent, irreligious)
16
heathenish(adjective, heterodoxy, irreligious)
13
gentile(noun, adjective, heterodoxy, irreligion)
12
barbarous(adjective, sectarian)
6
uncivilized
4
uncivilised
4
amoral
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APASmart Define. (2016). heathen thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/heathen/thesaurus/synonyms
ChicagoSmart Define. 2016. "heathen thesaurus" https://smartdefine.org/heathen/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, heathen thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/heathen/thesaurus/synonyms>.
MLASmart Define. "heathen thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/heathen/thesaurus/synonyms>