17 entries under useful topic. ×
| first-class(adjective, important) | |
| superior(adjective, important, ordinary, normal) | |
| chief(adjective, important, inferior, unimportant) | |
| important(adjective, dull, weak, little) | |
| major(adjective, important, inferior, little) | |
| main(adjective, important, common, inferior) | |
| first-rate(adjective, important) | |
| source(adjective, important, subalternate, shooter) | |
| big(adjective, important) | |
| causative(adjective, important) | |
| consequential(adjective, important) | |
| necessary(adjective, important, unimportant, trivial) | |
| significant(adjective, important) | |
| huge(adjective, important) | |
| large(adjective, important) | |
| valuable(adjective, important) | |
| worthwhile(adjective, important) |
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| APA | Smart Define. (2015). secondary thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/secondary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "secondary thesaurus" https://smartdefine.org/secondary/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, secondary thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/secondary/thesaurus/antonyms>. |
| MLA | Smart Define. "secondary thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/secondary/thesaurus/antonyms> |