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pollute

Definition of pollutenext

Synonym Chooser

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 The Carbon Border Adjustment Mechanism targets imports of aluminum, cement, steel, and other goods that the EU determines are made with more-polluting processes than those allowed within the bloc. Prashant Rao, semafor.com, 2 Jan. 2026 Highways, viaducts, giant interchanges, and a major Metro junction viciously mutilated São Paulo’s downtown in the 1960s and ’70s, demoting it from a popular residential area to a commercial transfer hub, overcrowded and polluted by day but forlorn by night. Michaëla De Lacaze Mohrmann, Artforum, 1 Jan. 2026 Snow and ice create conditions that can damage plants, lawns, and pollute waterways, particularly those located adjacent to roads, sidewalks, driveways, and other high-traffic areas. Barbara Gillette, The Spruce, 29 Dec. 2025 Through the car initiative, low-income Californians can trade in older, more polluting vehicles and receive a voucher to help pay for newer, less-polluting hybrid or electric vehicles. Hannah Ruhoff, Sacbee.com, 17 Dec. 2025 See All Example Sentences for pollute
Recent Examples of Synonyms for pollute
Verb
  • The estimated volume of wastewater contaminating the San Gabriel River is more than 100,000 gallons, per the release.
    Rachel Raposas, PEOPLE, 7 Jan. 2026
  • But by then, decades of unregulated waste disposal had contaminated sites all over the country.
    James Salzman, The Conversation, 5 Jan. 2026
Verb
  • According to other accounts, some white residents believed Makandal and his allies were behind a plot to poison the water supply in all the houses in the city of Le Cap.
    Literary Hub, Literary Hub, 5 Jan. 2026
  • In a recent study, however, researchers at Yale found that interoception helped mice avoid poisoning themselves.
    The New York Times News Service Syndicate, San Diego Union-Tribune, 30 Dec. 2025
Verb
  • Lawyers also argued the conviction should be overturned because the verdict was tainted by the media attention and due to faulty instructions to the jury.
    CNN Money, CNN Money, 6 Jan. 2026
  • Just as one bite of a cookie might not happen to contain chocolate chips, one small sample of drugs might not include fentanyl even if the larger supply is tainted, the agency’s website explains.
    Angie Leventis Lourgos, Chicago Tribune, 5 Jan. 2026

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Cite this Entry

“Pollute.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pollute. Accessed 13 Jan. 2026.

More from Merriam-Webster on pollute

Last Updated: - Updated example sentences
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