| rodenticide | |
| rotifer(noun, microorganism) | |
| scourge(bother, annoyance, plague, nuisance, epidemic) | |
| secondary infection | |
| seizure(disorder, disease, collapse, disturbance, sickness) | |
| shivering | |
| spasm(noun, disease) | |
| spirillum | |
| spirochete | |
| spore | |
| staphylococcus | |
| stomach poison | |
| streptococcus | |
| subclinical infection | |
| symptom(noun, disease) | |
| systemic | |
| systemic insecticide | |
| tease(bother, annoyance, nuisance) | |
| thorn in side(expression, idiom, bother, annoyance, nuisance) | |
| tormentor(bother, annoyance, nuisance) |
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| APA | Smart Define. (2015). virus thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/virus/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "virus thesaurus" https://smartdefine.org/virus/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, virus thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/virus/thesaurus/synonyms>. |
| MLA | Smart Define. "virus thesaurus" 20 November 2015. Web. 24 September 2026. <https://smartdefine.org/virus/thesaurus/synonyms> |