| pestilential(adjective, bad, evil, harmful, injurious) | |
| severe(adjective, violent, brutal, ferocious, dangerous) | |
| splenetic(adjective, mean, nasty, malicious, hurtful) | |
| sulphurous | |
| bitchy(adjective, slang, attitude, spiteful) | |
| cutting | |
| infectious | |
| maleficent(adjective, malevolence) | |
| poison(adjective, help) | |
| scathing | |
| bad | |
| barbarous(adjective, strong, violent, brutal, ferocious) | |
| biting(adjective, discourtesy) | |
| brutal(adjective, strong, violent, ferocious, menacing) | |
| deathly(adjective, dangerous) | |
| dirty(adjective, mean, nasty, hateful, malicious) | |
| furious(adjective, strong, severe, intense, violent) | |
| grim(adjective, mean, violent, cruel, hateful) | |
| malefic(adjective, hateful) | |
| sardonic |
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| APA | Smart Define. (2015). venomous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/venomous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "venomous thesaurus" https://smartdefine.org/venomous/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, venomous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/venomous/thesaurus/synonyms>. |
| MLA | Smart Define. "venomous thesaurus" 11 September 2015. Web. 26 September 2026. <https://smartdefine.org/venomous/thesaurus/synonyms> |