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microorganism Synonyms
Another word for microorganism
Choosing another word for microorganism that fits your sentence is easier when synonyms and similar words are paired with an exact noun definition and ranked by match strength.
• noun (Context 1)
A microscopic living organism, such as a bacterium, archaeon, protozoan, unicellular alga, or fungus, often including viruses in general scientific usage.
Usage Example
"Soil is teeming with billions of beneficial microorganisms that break down organic matter and recycle nutrients for plants."
Strongest
microbe
Strong
germ
Weak
pathogen
animalcule
Opposites of microorganism
The opposite of microorganism shifts depending on context. Common opposites include:
macroorganism
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Microorganism. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/microorganism