- Definitions|3
- Thesaurus|1k
- Abbreviations|0
10 entries under major topic. ×
| main(adjective, base, important, essential, basic) | |
| necessary(adjective, base, basic, prime, key) | |
| primary(adjective, base, important, essential, basic) | |
| principal(adjective, base, important, essential, basic) | |
| needed(verb, adjective, prime, main) | |
| cardinal(adjective, important, essential, prime, main) | |
| chief(adjective, base, basic, prime, key) | |
| prime(adjective, important, essential, main, chief) | |
| premier(adjective, important, essential, prime, main) | |
| head(noun, adjective, important, essential, main) |
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| APA | Smart Define. (2015). ancillary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ancillary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "ancillary thesaurus" https://smartdefine.org/ancillary/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, ancillary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ancillary/thesaurus/antonyms>. |
| MLA | Smart Define. "ancillary thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/ancillary/thesaurus/antonyms> |