Synonyms|443Antonyms|260|Broader|12Narrower|18Related|368
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meow
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mercurialness
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merry-making(sorrow, sadness)
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mewling
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mildness
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mirthfulness
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mischief
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moo
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new look(expression, calm)
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newest wrinkle(expression, work)
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nicker
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nimbleness
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nonsense(sense, judgment)
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object of derision(expression, idiom, work)
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object of ridicule(expression, idiom, work)
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passing fancy(expression, calm)
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payof
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performance
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perkiness
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permissiveness
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APASmart Define. (2015). seriousness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/seriousness/thesaurus/antonyms
ChicagoSmart Define. 2015. "seriousness thesaurus" https://smartdefine.org/seriousness/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, seriousness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/seriousness/thesaurus/antonyms>.
MLASmart Define. "seriousness thesaurus" 23 December 2015. Web. 28 September 2026. <https://smartdefine.org/seriousness/thesaurus/antonyms>