Synonyms|1.3kAntonyms|350|Broader|9Narrower|12Related|1.5k
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deficient
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deficiently
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delicate
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depthless
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derisorily
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derisory(big, substantial)
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derived
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deviant
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diminutive
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dinky
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direly
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disappear
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discarded
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dispensable
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dissuasive
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distressingly
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doublespeak(reasonable, substantial)
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downbeat
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droll
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duck
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APASmart Define. (2016). significant thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/significant/thesaurus/antonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/significant/thesaurus/antonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 23 September 2026. <https://smartdefine.org/significant/thesaurus/antonyms>