Synonyms of contaminant

contaminant

noun

kən-ˈta-mə-nənt 

as in contamination

something that is or that makes impure

a filter to remove contaminants from the drinking water

Synonyms & Similar Words

• contamination
• pollutant
• sludge
• defect
• impurity
• soil
• irregularity
• stain
• adulterant
• taint
• defilement
• dirt
• spot
• abnormality
• muck
• blot
• fault
• grime
• filth
• blotch
• flaw
• scum
• smut
• blemish
• disfigurement
• imperfection

Antonyms & Near Antonyms

• filter
• purifier
• refiner
• clarifier
• purity
• cleanliness
• immaculateness

Example Sentences

Recent Examples of contaminant

Therefore, the researchers' anode not only removes a toxic contaminant but also reduces the energy needed to produce hydrogen at the cathode, increasing the system's overall hydrogen-production efficiency. — New Atlas, 24 Oct. 2026

Back on home soil, Bilby went down a rabbit hole of research that revealed 52 contaminants in Liverpool tap water. — Tracy Achonwa, Vogue, 23 Oct. 2026

This system removes salt and other contaminants while turning the brine into solids, using almost all waste heat. — Muskan Bhatia, Interesting Engineering, 23 Oct. 2026

The report pointed to inconsistent oversight by the Marijuana Enforcement Division and loose state rules around testing marijuana products or contaminants. — Christopher Osher, ProPublica, 21 Oct. 2026