| inconsequential | |
| inessential(adjective, common, inferior) | |
| least | |
| lesser | |
| peripheral | |
| slight | |
| spare | |
| standby | |
| subsidiary | |
| supplementary | |
| supporting | |
| surfeit(noun, want, excess, flapper, biceps) | |
| accessory | |
| additional | |
| arm(noun, division, annex, subdivision, flapper) | |
| lower | |
| mild | |
| nonessential(adjective, common, inferior) | |
| accessorial | |
| adjunctive |
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| APA | Smart Define. (2016). main thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/main/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "main thesaurus" https://smartdefine.org/main/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, main thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/main/thesaurus/antonyms>. |
| MLA | Smart Define. "main thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/main/thesaurus/antonyms> |