3 entries under artificial topic. ×
| unnatural(adjective, reasonable, unusual, unreasonable, regular) | |
| synthetic | |
| man-made |
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| APA | Smart Define. (2016). natural thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/natural/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "natural thesaurus" https://smartdefine.org/natural/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, natural thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/natural/thesaurus/antonyms>. |
| MLA | Smart Define. "natural thesaurus" 15 February 2016. Web. 27 September 2026. <https://smartdefine.org/natural/thesaurus/antonyms> |