Synonyms of pollutant

pollutant

noun

pə-ˈlü-tᵊnt 

as in contaminant

something that is or that makes impure

filtered the pollutants out of the water

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of pollutant

Philly neighborhoods with a higher percentage of green areas, by contrast, have lower levels of diesel particulate matter, nitrogen dioxide and other toxic air pollutants, which inflame and irritate the respiratory system. — Mahbubur Meenar, The Conversation, 5 Aug. 2026

Many existing data centers are using on-site power generation, including pollutant-spewing diesel generators, to bypass the grid entirely. — Victor Tangermann, Futurism, 5 Aug. 2026

The air district is warning residents that wildfire smoke contains fine particulate matter and other harmful pollutants, adding that exposure is unhealthy, even for short periods of time. — Tim Fang, CBS News, 4 Aug. 2026

That has raised concerns that pollutants could spread if the debris is not properly sorted and disposed of. — ABC News, 29 July 2026