Synonyms of pollute

pollute

verb

pə-ˈlüt 

as in to contaminate

to make unfit for use by the addition of something harmful or undesirable

outmoded factories polluting the air

Synonyms & Similar Words

• contaminate
• poison
• taint
• befoul
• infect
• defile
• dirty
• foul
• soil
• dilute
• sully
• stain
• besmirch
• blacken
• muddy
• smudge
• adulterate
• spoil
• rot
• corrupt
• foul up
• mire
• water down
• smirch
• grime
• begrime
• doctor

Antonyms & Near Antonyms

• purify
• clean
• clarify
• cleanse
• purge
• clear
• distill
• decontaminate
• filter
• sterilize
• distil
• disinfect
• sanitize

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

Recent Examples of pollute

Just as pollution from early factories unexpectedly damaged the environment, AI systems risk polluting the digital environment by flooding the Internet with synthetic content. —ArsTechnica, 25 Apr. 2025

The city’s growth has far outpaced the existing sewage treatment plants, and inadequate and broken facilities spew waste into the river, polluting the water and air in Imperial Beach and other communities near the border. —Ian James, Los Angeles Times, 23 Apr. 2025

The layoffs were so abrupt, staff said, that lab animals were left without staff to care for them and had to be euthanized, and an experimental mine used to test protective gear beneath the agency’s Pittsburgh campus was at risk of flooding and polluting the surrounding environment. —Mark Olalde, ProPublica, 21 Apr. 2025

This means that while some parts of the world experience water scarcity, vast amounts of clean water are being polluted or depleted to keep the fashion engine running. —Dianne Plummer, Forbes.com, 18 Apr. 2025