13 entries under unimportant topic. ×
| unnecessary(adjective, trivial, valuable, required) | |
| voluntary(adjective, trivial) | |
| inessential(noun, adjective, trivial) | |
| needless(adjective, reasonable, trivial) | |
| nonessential(adjective, important, trivial, essential) | |
| useless(adjective, trivial) | |
| extra(adjective, common, usual, trivial) | |
| contingent(adjective, trivial) | |
| additional(adjective, trivial, extra, supplementary) | |
| insignificant(adjective, trivial) | |
| secondary(adjective, important, useful, trivial) | |
| trivial(adjective, substantial, serious) | |
| minor(adjective, superior, big, trivial) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/necessary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/necessary/thesaurus/antonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 29 September 2026. <https://smartdefine.org/necessary/thesaurus/antonyms> |