| neoplasm(growth, tumor, toxin) | |
| nodule(growth, tumor) | |
| noxious substance(expression, growth, tumor, toxin) | |
| oarfish(noun, leviathan) | |
| ordeal(noun, evil, burden, magic, spell) | |
| outbreak(noun, cold, curse, wave, rash) | |
| pandemic(noun, cold, curse, wave, rash) | |
| pathosis(growth, tumor, toxin) | |
| pestilence(noun, evil, burden, cold, wave) | |
| phoenixes | |
| pillager(growth, tumor, toxin) | |
| poison(growth, tumor, toxin) | |
| poisonous substance(expression, growth, tumor, toxin) | |
| protoplasm | |
| ransacker(growth, tumor, toxin) | |
| rash(noun, cold, curse, wave, plague) | |
| ravage(noun, damage, harm, cold, curse) | |
| roc | |
| rowen | |
| rusty |
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| APA | Smart Define. (2013). hydra thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/hydra/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "hydra thesaurus" https://smartdefine.org/hydra/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2013, hydra thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hydra/thesaurus/synonyms>. |
| MLA | Smart Define. "hydra thesaurus" 17 June 2013. Web. 23 September 2026. <https://smartdefine.org/hydra/thesaurus/synonyms> |