- Definitions|2
- Thesaurus|131
- Abbreviations|0
| atheist(noun, person, view, radical, disbelieve) | |
| free spirit(noun, expression, nonconformist) | |
| skeptic(noun, person, radical, nonconformist, irreligion) | |
| independent(noun, nonconformist, individualist, maverick) | |
| maverick(noun, independent, nonconformist, individualist, independent thinker) | |
| infidel(noun, radical, irreligion) | |
| agnostic(noun, radical, irreligion) | |
| radical(noun, person, independent thinker) | |
| libertine(noun, radical) | |
| nonconformist(noun, rebel, independent, fanatic, progressive) | |
| eclectic | |
| individualist(noun, independent thinker) | |
| latitudinarian(noun, adjective, irreligion) | |
| heretic(noun, independent thinker) | |
| deist(noun, irreligion) | |
| liberal | |
| pagan(noun, person) | |
| unbeliever(noun, nonconformist, irreligion, separatist, cynic) | |
| heathen(noun, irreligion) | |
| non-believer(noun, independent thinker) |
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| APA | Smart Define. (2015). freethinker thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/freethinker/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "freethinker thesaurus" https://smartdefine.org/freethinker/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, freethinker thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/freethinker/thesaurus/synonyms>. |
| MLA | Smart Define. "freethinker thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/freethinker/thesaurus/synonyms> |