Synonyms|649Antonyms|194|Broader|12Narrower|0Related|467

48 entries under adjective topic. ×

0
grim
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hazy
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impenetrable
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indistinct
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inert
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leaden
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lifeless
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miserable
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misty
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morose
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mournful
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muddy
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murky
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obscure
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obtuse
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ominous
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opaque
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questionable
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shadowy
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shady
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APASmart Define. (2015). brighten thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/brighten/thesaurus/antonyms
ChicagoSmart Define. 2015. "brighten thesaurus" https://smartdefine.org/brighten/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, brighten thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/brighten/thesaurus/antonyms>.
MLASmart Define. "brighten thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/brighten/thesaurus/antonyms>