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sulphurously
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viciously
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vile
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vitriolically
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vituperatively(adverb, maliciously, venomously)
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APASmart Define. (2016). poisonously thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/poisonously/thesaurus/synonyms
ChicagoSmart Define. 2016. "poisonously thesaurus" https://smartdefine.org/poisonously/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, poisonously thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/poisonously/thesaurus/synonyms>.
MLASmart Define. "poisonously thesaurus" 26 March 2016. Web. 24 September 2026. <https://smartdefine.org/poisonously/thesaurus/synonyms>