Synonyms|1.4kAntonyms|261|Broader|21Narrower|6Related|1.3k
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irreverent
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jerky
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jesting
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kittenish
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kooky
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lethargic
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light
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light-minded
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loony
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loose(adjective, weak)
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ludic
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lukewarm
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lunatic
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lying in wait
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mad
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mawkish
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minor
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missing
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misty
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nasty
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APASmart Define. (2016). earnest thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/earnest/thesaurus/antonyms
ChicagoSmart Define. 2016. "earnest thesaurus" https://smartdefine.org/earnest/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, earnest thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/earnest/thesaurus/antonyms>.
MLASmart Define. "earnest thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/earnest/thesaurus/antonyms>