22 entries under important topic. ×
| first-class(adjective, useful) | |
| superior(adjective, ordinary, useful, normal) | |
| chief(adjective, inferior, useful, unimportant) | |
| fundamental(adjective, basic) | |
| major(adjective, inferior, useful, little) | |
| main(adjective, common, inferior, useful) | |
| cardinal(adjective, key) | |
| essential(adjective, basic, vital, fundamental) | |
| first-rate(adjective, useful) | |
| head(adjective, inferior, unimportant, chief) | |
| source(adjective, useful, subalternate, shooter) | |
| big(adjective, useful) | |
| causative(adjective, useful) | |
| consequential(adjective, useful) | |
| necessary(adjective, useful, unimportant, trivial) | |
| significant(adjective, useful) | |
| principal | |
| huge(adjective, useful) | |
| large(adjective, useful) | |
| useful |
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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> |