- Definitions|2
- Thesaurus|4.1k
- Abbreviations|0
| important(adjective, substantial, serious, valuable) | |
| royal | |
| significant(adjective, important, substantial, unimportant, serious) | |
| major(adjective, dull, big, substantial, serious) | |
| substantial(adjective, serious) | |
| consequential(adjective, small, substantial, serious) | |
| essential(adjective, substantial, serious) | |
| weighty(adjective, light, important, substantial, serious) | |
| momentous(adjective, important, ordinary, insignificant) | |
| serious(adjective, substantial, weighty, crucial) | |
| key(insignificant, unimportant) | |
| material | |
| titanic | |
| appreciable | |
| crucial(adjective, important, critical) | |
| eventful(adjective, significant, busy) | |
| fundamental(adjective, important, basic) | |
| gargantuan | |
| great | |
| smart |
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| APA | Smart Define. (2015). trivial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/trivial/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "trivial thesaurus" https://smartdefine.org/trivial/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, trivial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/trivial/thesaurus/antonyms>. |
| MLA | Smart Define. "trivial thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/trivial/thesaurus/antonyms> |