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

Rather than filtering contaminants out and concentrating them into waste, this method uses ozone gas and naturally occurring microbes to break contaminants down instead of just isolating them. — Piper Heath, Los Angeles Times, 16 Sep. 2026

State law requires parents and guardians of students at schools near certain crematorium projects to receive notification about the potential for toxic air contaminants. — Madisen Keavy, CBS News, 16 Sep. 2026

Hardness is not a contaminant that every report is required to include. — Ryan Brennan, Kansas City Star, 15 Sep. 2026

This contaminant accumulates in larger fish that eat smaller fish. — Angela Ryan Lee, Verywell Health, 10 Sep. 2026