Synonyms|936Antonyms|350|Broader|17Narrower|2Related|1.6k
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dominant
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dour
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drastic
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drudge
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dusk
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egregious
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elder
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emphatic
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entrenched
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epic
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exceptional
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exhaustive
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expeditious
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extinguish
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fastidious
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fear
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feller(small, little)
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fierce
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filled
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flavorful
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APASmart Define. (2015). frivolous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/frivolous/thesaurus/antonyms
ChicagoSmart Define. 2015. "frivolous thesaurus" https://smartdefine.org/frivolous/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, frivolous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/frivolous/thesaurus/antonyms>.
MLASmart Define. "frivolous thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/frivolous/thesaurus/antonyms>