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 Citizen suits, for example, have extracted millions from heavily polluting oil and gas operations, and ensured that lead pipes in Flint, Michigan, would be removed after its water crisis. — Michael Phillis, Fortune, 8 Aug. 2026 Both of us need data centers to power our online research, but New York deserves data centers that are run responsibly, not that are allowed to pollute willy-nilly. — Voice Of The People, New York Daily News, 7 Aug. 2026 Additional pressure on the grid, such as from extreme temperatures, could make margins even thinner and force the use of higher-polluting backup plants. — Alex Music, IEEE Spectrum, 6 Aug. 2026 To quickly get the facilities online, the company brought in heavily polluting gas turbines that residents complain is making the air hard to breathe. — Frank Landymore, Futurism, 5 Aug. 2026 See All Example Sentences for pollute

Recent Examples of Synonyms for pollute

Verb

Their concentrations then increase at successively higher trophic levels (levels of the food chain) as organisms consume contaminated prey.

— Encyclopedia Britannica, Encyclopedia Britannica, 3 Sep. 2026
It was shut down in 2008 and has sat dormant since, contaminated by hazardous chemicals in the ground that GM never cleaned up.

— Greta Reich, USA Today, 3 Sep. 2026

Definition of contaminate

Verb

Veterinarians determined that the snake's venom poisoned Samba, prompting them to give her antivenin.

— Anthony Thompson, USA Today, 28 Aug. 2026
Glutathione is processed in sterile compounding pharmacies, and there have been cases of people getting poisoned due to contamination at these facilities, Sack said.

— ABC News, ABC News, 23 Aug. 2026

Definition of poison

Verb

But Reese and her Dream teammates tainted the historic night during the final 20 seconds.

— Dan Zaksheske OutKick, FOXNews.com, 25 Aug. 2026
In July, the US was hit with a wave of explosive diarrhea caused by an outbreak of cyclospora, a parasite that spreads through food and water tainted with human feces.

— Maggie Harrison Dupré, Futurism, 20 Aug. 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 4 Sep. 2026.

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