Synonyms|443Antonyms|260|Broader|12Narrower|18Related|368

2 entries under silliness topic. ×

5
frivolity(noun, childishness)
4
levity(noun, gravity, funniness)
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APASmart Define. (2015). seriousness thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/seriousness/thesaurus/antonyms
ChicagoSmart Define. 2015. "seriousness thesaurus" https://smartdefine.org/seriousness/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2015, seriousness thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/seriousness/thesaurus/antonyms>.
MLASmart Define. "seriousness thesaurus" 23 December 2015. Web. 30 September 2026. <https://smartdefine.org/seriousness/thesaurus/antonyms>