12 entries under important topic. ×

10
significant(adjective, substantial, unimportant, serious)
8
weighty(adjective, light, substantial, serious)
8
momentous(adjective, ordinary, insignificant)
6
crucial(adjective, critical)
6
fundamental(adjective, basic)
3
critical
3
principal
2
fatal(adjective, critical)
1
earnest(adjective, cool, cold)
1
head(adjective, inferior, unimportant, chief)
1
predominant(adjective, ruling)
1
uppermost(adjective, chief)
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APASmart Define. (2015). trivial thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/trivial/thesaurus/antonyms
ChicagoSmart Define. 2015. "trivial thesaurus" https://smartdefine.org/trivial/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, trivial thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/trivial/thesaurus/antonyms>.
MLASmart Define. "trivial thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/trivial/thesaurus/antonyms>