Synonyms|782Antonyms|254|Broader|9Narrower|9Related|1.5k
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counterproductive
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crippled
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damnable
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dangerous
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deadly
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deathly
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debased
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deceitful
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defunct
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delusive
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derogatory
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disagreeable(adjective, bad)
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disapproving
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diseased
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disfigured
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disobliging
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doomed
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down on(expression, good, friendly)
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downbeat
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enervating
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APASmart Define. (2016). beneficial thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/beneficial/thesaurus/antonyms
ChicagoSmart Define. 2016. "beneficial thesaurus" https://smartdefine.org/beneficial/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2016, beneficial thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/beneficial/thesaurus/antonyms>.
MLASmart Define. "beneficial thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/beneficial/thesaurus/antonyms>