Frivolous Thesaurus / Antonyms

58 entries under adjective topic. ×

34	serious
15	solemn(quiet, serious)
11	mature
7	grave(light, sensible, gloomy, lively)
7	thoughtful
7	sensible
5	staid(set, restrained, indecorous)
5	critical
4	wise
4	important
3	severe
2	crucial
1	eminent
1	eventful
1	fatal
1	fateful
1	fundamental
1	great
1	meaningful
1	momentous

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APA	Smart Define. (2015). frivolous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/frivolous/thesaurus/antonyms
Chicago	Smart Define. 2015. "frivolous thesaurus" https://smartdefine.org/frivolous/thesaurus/antonyms (accessed September 28, 2026).
Harvard	Smart Define 2015, frivolous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/frivolous/thesaurus/antonyms>.
MLA	Smart Define. "frivolous thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/frivolous/thesaurus/antonyms>

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