| virus(noun, illness, sickness, bug, plague) | |
| bug(noun, informal, illness, sickness, plague) | |
| germ(noun, illness, sickness, bug, beings) | |
| bacillus(noun, illness, sickness, germ, microorganism) | |
| microorganism(noun, illness, sickness, bug, plague) | |
| animalcule(noun, animal, littleness, microorganism) | |
| bacterium(noun, illness, sickness, bug, plague) | |
| bacteria(noun, littleness, microorganism) | |
| pathogen(noun, germ, bacteria) | |
| aerobe | |
| amoeba(noun, microorganism) | |
| anaerobe | |
| gnat | |
| insect(noun, animal, littleness) | |
| mammal(noun, animal) | |
| protozoa(noun, microorganism) | |
| amphibian | |
| arthropod(noun, animal) | |
| crustacean | |
| fish(noun, animal) |
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| APA | Smart Define. (2015). microbe thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/microbe/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "microbe thesaurus" https://smartdefine.org/microbe/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, microbe thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/microbe/thesaurus/synonyms>. |
| MLA | Smart Define. "microbe thesaurus" 8 December 2015. Web. 20 September 2026. <https://smartdefine.org/microbe/thesaurus/synonyms> |