Synonyms|649Antonyms|194|Broader|12Narrower|0Related|467
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dissuade(verb, worsen, darken)
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distort
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doltish
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draw close(expression, rise, extend)
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draw to a close(expression, idiom, rise, extend)
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draw to close(expression, idiom, rise, extend)
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dreary
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dumbfound
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dupe
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dusky
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dye
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ease off
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eclipse
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enfeeble
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fade away(expression, advance, develop, appear, thrive)
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faded
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fall short(expression, enhance)
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fatuous
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flatten
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flummox
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APASmart Define. (2015). brighten thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/brighten/thesaurus/antonyms
ChicagoSmart Define. 2015. "brighten thesaurus" https://smartdefine.org/brighten/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, brighten thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/brighten/thesaurus/antonyms>.
MLASmart Define. "brighten thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/brighten/thesaurus/antonyms>