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 Clara Benson, who is one of the founders of the No Big Bend Wall coalition, says bright lights in the area designed to illuminate the border could pollute the skies in an area renowned for having some of the best views of the stars. — Rebecca Santana, Los Angeles Times, 2 July 2026 The solution is to support federal and state legislation that encourages lower-cost, less-polluting renewable energy to speed up the transition away from environmentally damaging fossil fuels. — Chicago Tribune, 29 June 2026 Compared with synthetic fibers, which slough off microplastics that pollute waterways, land and air, natural fibers can be grown or raised in ways that sequester carbon, improve soil health and reduce inputs like pesticides, resulting in a lower environmental footprint, Pingree said. — Jasmin Malik Chua, Footwear News, 22 June 2026 The California Air Resources Board has said transportation is responsible for about 38% of these emissions, while the next-most-polluting sector, industrial sources, is responsible for 22% of emissions. — Ariane Lange, Sacbee.com, 25 June 2026 See All Example Sentences for pollute

Recent Examples of Synonyms for pollute

Verb

Intestinal infections, which caused severe diarrhea and dehydration, were common in 1776 because of poor sanitation and contaminated food and water, especially in military camps, per NIH and NLM.

— Melissa Rudy, FOXNews.com, 3 July 2026
It is caused by eating or drinking food contaminated with either bacteria, viruses, parasites or a harmful toxin.

— Sheah Rarback, Miami Herald, 2 July 2026

Definition of contaminate

Verb

The special bond between Supergirl and her scruffy animal sidekick becomes a key plot point in Kara’s new solo movie, where Krypto is poisoned by space outlaw Krem of the Yellow Hills (Matthias Schoenaerts).

— Josh Weiss, Forbes.com, 29 June 2026
Kara Zor-El (Alcock) goes on a planet-hopping mission to save her beloved Krypto – with young and vengeful girl Ruthye (Eve Ridley) in tow – after he’s poisoned by the villainous Krem of the Yellow Hills (Matthias Schoenaerts).

— Brian Truitt, USA Today, 27 June 2026

Definition of poison

Verb

That experience is quickly tainted, however, once dullness and yellowing set into the fabrics.

— Quincy Bulin, Southern Living, 1 July 2026
Murdaugh’s attorneys appealed the convictions, saying the trial was tainted by the county clerk Becky Hill’s inappropriate comments to jurors implying his guilt.

— Eric Levenson, CNN Money, 29 June 2026

Definition of taint

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polluted

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“Pollute.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pollute. Accessed 7 Jul. 2026.

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