6 entries under basic topic. ×
| primary(adjective, inferior, last) | |
| fundamental(adjective, important) | |
| essential(adjective, important, vital, fundamental) | |
| integral(adjective, necessary) | |
| staple(adjective, necessary) | |
| elementary(adjective, simple) |
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| APA | Smart Define. (2015). secondary thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/secondary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "secondary thesaurus" https://smartdefine.org/secondary/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, secondary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/secondary/thesaurus/antonyms>. |
| MLA | Smart Define. "secondary thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/secondary/thesaurus/antonyms> |