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

As a result, some products may contain contaminants or fail to provide the amount of protein listed, Balady says. — Martha Stewart, 12 Aug. 2026

Property owners should ask what contaminants will be tested, where samples will be collected, which analytical methods will be used, how results will be reported and when the report will be delivered. — Andrew J. Whelton, The Conversation, 11 Aug. 2026

Hydrogen sulfide is a colorless gas and can smell like rotten eggs, signaling other contaminants may be in the area as well. — Alexiah Syrai Olsen, Sacbee.com, 10 Aug. 2026

Temperature, pressure, contaminants, hazardous area classification and maintenance access still matter. — Gregory Shahnovsky, Forbes.com, 7 Aug. 2026