Synonyms|93Antonyms|0|Broader|3Narrower|1Related|15
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ill will(noun, expression, wickedness)
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indignity(noun, wickedness)
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insidiousness
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maleficence(noun, evil, wickedness, malice, malevolence)
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malevolence(noun, evil, wickedness, malice, maliciousness)
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maliciousness(noun, evil, wickedness, malice, malevolence)
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malignance
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maltreatment(noun, damage, destruction, injury, impairment)
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mischievous
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ruinousness(noun, harmfulness)
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toxicities
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virulency
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virulent enmity(expression, idiom)
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ChicagoSmart Define. 2015. "perniciousness thesaurus" https://smartdefine.org/perniciousness/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, perniciousness thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/perniciousness/thesaurus/synonyms>.
MLASmart Define. "perniciousness thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/perniciousness/thesaurus/synonyms>