| main(adjective, common, inferior, utter, absolute) | |
| necessitous | |
| prerequisite(adjective, secondary, necessary) | |
| staple(adjective, basic, necessary) | |
| subservient(adjective, useful, secondary, disobedient) | |
| unavoidable | |
| urgent(adjective, needing) | |
| utilitarian(adjective, practical, impractical) | |
| vital | |
| binding | |
| compulsory | |
| critical | |
| helpful | |
| avail | |
| balanced | |
| bottom(adjective, fundamental, lowest) | |
| bottom line(expression, insignificant, unimportant) | |
| chief(adjective, important, essential) | |
| choate | |
| coal and ice(expression, idiom, insignificant, unimportant, trivial) |
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| APA | Smart Define. (2015). unnecessary thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unnecessary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "unnecessary thesaurus" https://smartdefine.org/unnecessary/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, unnecessary thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unnecessary/thesaurus/antonyms>. |
| MLA | Smart Define. "unnecessary thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/unnecessary/thesaurus/antonyms> |