POLLUTE Synonyms: 40 Similar and Opposite Words

Q: How does the verb 'pollute' contrast with its synonyms?

Some common synonyms of pollute are contaminate , defile , and taint . While all these words mean "to make impure or unclean," pollute , sometimes interchangeable with contaminate , distinctively may imply that the process which begins with contamination is complete and that what was pure or clean has been made foul, poisoned, or filthy. // the polluted waters of the river

Q: When can 'contaminate' be used instead of 'pollute'?

The words contaminate and pollute can be used in similar contexts, but contaminate implies intrusion of or contact with dirt or foulness from an outside source. // water contaminated by industrial wastes

Q: When is 'defile' a more appropriate choice than 'pollute'?

The words defile and pollute are synonyms, but do differ in nuance. Specifically, defile implies befouling of what could or should have been kept clean and pure or held sacred and commonly suggests violation or desecration. // defile a hero's memory with slanderous innuendo

Q: When is it sensible to use 'taint' instead of 'pollute'?

The synonyms taint and pollute are sometimes interchangeable, but taint stresses the loss of purity or cleanliness that follows contamination. // tainted meat // a politician's tainted reputation

pollute

verb

pə-ˈlüt

Definition of pollute

as in to contaminate

to make unfit for use by the addition of something harmful or undesirable outmoded factories polluting the air

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How does the verb pollute contrast with its synonyms?

Some common synonyms of pollute are contaminate, defile, and taint. While all these words mean "to make impure or unclean," pollute, sometimes interchangeable with contaminate, distinctively may imply that the process which begins with contamination is complete and that what was pure or clean has been made foul, poisoned, or filthy.

the polluted waters of the river

When can contaminate be used instead of pollute?

The words contaminate and pollute can be used in similar contexts, but contaminate implies intrusion of or contact with dirt or foulness from an outside source.

water contaminated by industrial wastes

When is defile a more appropriate choice than pollute?

The words defile and pollute are synonyms, but do differ in nuance. Specifically, defile implies befouling of what could or should have been kept clean and pure or held sacred and commonly suggests violation or desecration.

defile a hero's memory with slanderous innuendo

When is it sensible to use taint instead of pollute?

The synonyms taint and pollute are sometimes interchangeable, but taint stresses the loss of purity or cleanliness that follows contamination.

tainted meat

a politician's tainted reputation

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of pollute Use Pretreatments in Water Sunflowers are known for polluting water when excessive debris oozes from their stems. — Sheryl Geerts, Better Homes & Gardens, 3 Aug. 2026 Greenpeace Germany warned that oil has already polluted stretches of coastline and damaged the area's fragile ecosystem. — Stephen Sorace, FOXNews.com, 2 Aug. 2026 Stretches of coastline and the area’s sensitive marine ecosystem have been polluted and damaged. — ABC News, 1 Aug. 2026 Cleanup efforts at the Lineage cold-storage warehouse in Boyle Heights are nearing the halfway mark, six weeks after a fire at the depot left millions of pounds of rotting food to pollute the Los Angeles neighborhood. — Gavin J. Quinton, Los Angeles Times, 31 July 2026 See All Example Sentences for pollute

Recent Examples of Synonyms for pollute

Verb

But research shows contaminated toys are still slipping through the cracks.

— Jackie Flynn Mogensen, Scientific American, 13 Aug. 2026
Heavy deposits could collapse roofs, contaminate water, damage machinery, bury crops, disrupt power networks, and make roads difficult to use.

— Atharva Gosavi, Interesting Engineering, 12 Aug. 2026

Definition of contaminate

Verb

The types of crimes weren’t spelled out, but imagine that a President, say, poisoned his estranged spouse and concealed the crime until after leaving the White House.

— Margaret Talbot, New Yorker, 10 Aug. 2026
Aegon refuses, so instead his own supporters poison him with wine.

— James Grebey, Vulture, 10 Aug. 2026

Definition of poison

Verb

How can someone from far away seize control of a water system and possibly shut off the flow or taint the water?

— William Akoto, Fortune, 5 Aug. 2026
The political violence that tainted the Reconstruction and post-Reconstruction era clashes with traditional definitions of terrorism, which typically targets a power structure that such violence seeks to upend.

— Jacob Ware, The Conversation, 31 July 2026

Definition of taint

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pollutants

pollute

polluted

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“Pollute.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pollute. Accessed 16 Aug. 2026.

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Synonyms of pollute

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