- Definitions|2
- Thesaurus|554
- Abbreviations|0
| unbelief(noun, doubt, atheism, nihilism, nonbelief) | |
| unbelieving(adjective, irreligion) | |
| unbigotedness | |
| unconventional(adjective, moderate, independent, open-minded, nonconformist) | |
| unorthodox(adjective, moderate, independent, open-minded, progressive) | |
| abstemious | |
| adiamorphic | |
| agnosticism(noun, atheism, unbelief, nonbelief) | |
| apostate | |
| apostatical | |
| atheistic | |
| avant-garde(moderate, open-minded, noninterventionist) | |
| benevolent | |
| broad(moderate, open-minded, noninterventionist) | |
| catholic(adjective, moderate, independent, open-minded, nonconformist) | |
| classicism | |
| controversial | |
| debauched | |
| deism | |
| disbelief(noun, doubt, atheism, unbelief, nihilism) |
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| APA | Smart Define. (2015). freethinking thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/freethinking/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "freethinking thesaurus" https://smartdefine.org/freethinking/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, freethinking thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/freethinking/thesaurus/synonyms>. |
| MLA | Smart Define. "freethinking thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/freethinking/thesaurus/synonyms> |