| fundamental(noun, adjective, part, decrease, important) | |
| less | |
| organic(adjective, unimportant, inorganic) | |
| essential(noun, adjective, decrease, common, usual) | |
| necessary(adjective, common, usual, unimportant, trivial) | |
| niggardly | |
| main(adjective, common, inferior, usual, principal) | |
| need | |
| needed(adjective, common, usual) | |
| normal(adjective, common, usual) | |
| basic(noun, adjective, decrease, common, insignificant) | |
| integral(adjective, common, usual) | |
| necessity(noun, decrease) | |
| as part of(adverb, separate, single, alone, apart) | |
| key details(adjective, insignificant, unimportant, minor, subordinate) | |
| basically(adverb, fundamentally, intrinsically) | |
| poor | |
| prerequisite(noun, condition, necessity, nonessential) | |
| quintessence(noun, essence, core, outside) | |
| required |
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| APA | Smart Define. (2016). extra thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/extra/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/antonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, extra thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/extra/thesaurus/antonyms>. |
| MLA | Smart Define. "extra thesaurus" 30 March 2016. Web. 20 September 2026. <https://smartdefine.org/extra/thesaurus/antonyms> |