| toxiferous | |
| uncharitable | |
| unforgiving(adjective, mean, hateful, malicious, spiteful) | |
| vehement(strong, violent, brutal, ferocious, menacing) | |
| violent(strong, brutal, ferocious, menacing, fatal) | |
| viperish(adjective, hateful) | |
| waspish(adjective, mean, hateful, malicious, malignant) | |
| unpleasant(mean, malicious, vindictive) | |
| abusive | |
| accidentally on purpose(expression, adjective, idiom, mean, nasty) | |
| acidulous | |
| alarming(adjective, dangerous) | |
| annihilative(adjective, harmful, injurious, damaging, deadly) | |
| antipathetic | |
| ape(adjective, strong, severe, intense, violent) | |
| astringent | |
| awful(adjective, mean, strong, severe, nasty) | |
| bad-natured(adjective, mean, nasty, vicious, wicked) | |
| beastly(adjective, mean, nasty, violent, wild) | |
| belligerent |
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| APA | Smart Define. (2015). venomous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/venomous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "venomous thesaurus" https://smartdefine.org/venomous/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, venomous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/venomous/thesaurus/synonyms>. |
| MLA | Smart Define. "venomous thesaurus" 11 September 2015. Web. 25 September 2026. <https://smartdefine.org/venomous/thesaurus/synonyms> |