- Definitions|1
- Thesaurus|4.1k
- Abbreviations|0
| crucial(adjective, important, critical) | |
| decisive | |
| eminent(adjective, obscure, important, unknown) | |
| essential(adjective, important, vital) | |
| eye-catching | |
| grave(adjective, dangerous, crucial) | |
| key(adjective, important, insignificant, essential) | |
| outstanding(adjective, weak, poor, low) | |
| relevant(adjective, important, insignificant, substantial, unrelated) | |
| symbiotic | |
| titanic | |
| useful(adjective, important, substantial) | |
| worthwhile(adjective, important, substantial, worthless) | |
| distinguished(obscure, insignificant) | |
| illustrious(adjective, bad, poor, famous, prominent) | |
| main(adjective, common, inferior, principal, predominant) | |
| aforementioned | |
| capital(adjective, superior, inferior, insignificant, essential) | |
| cardinal(adjective, important, key) | |
| chief(adjective, important, essential) |
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| APA | Smart Define. (2016). unimportant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unimportant/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "unimportant thesaurus" https://smartdefine.org/unimportant/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, unimportant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unimportant/thesaurus/antonyms>. |
| MLA | Smart Define. "unimportant thesaurus" 28 March 2016. Web. 24 September 2026. <https://smartdefine.org/unimportant/thesaurus/antonyms> |