pollute

verb

pol·​lute pə-ˈlüt 

polluted; polluting

transitive verb

1

a

: to make ceremonially or morally impure : defile

b

: debase sense 1

using language to deceive or mislead pollutes language

—Linda C. Lederman

2

a

: to make physically impure or unclean : befoul, dirty

b

: to contaminate (an environment) especially with man-made waste

polluter noun

pollutive

pə-ˈlü-tiv 

adjective

Synonyms

• contaminate
• poison
• taint

Choose the Right Synonym for pollute

contaminate, taint, pollute, defile mean to make impure or unclean.

contaminate implies intrusion of or contact with dirt or foulness from an outside source.

water contaminated by industrial wastes

taint stresses the loss of purity or cleanliness that follows contamination.

tainted meat

a politician's tainted reputation

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

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

Examples of pollute in a Sentence

Miles of beaches were polluted by the oil spill.

Car exhaust pollutes the air.

Recent Examples on the Web

Stop polluting and give them stable, growing economies in which to be raised. —Suwanna Gauntlett Upjohn, Forbes.com, 29 Aug. 2025

The Grand Calumet River and Indiana Harbor Ship Canal — located in East Chicago — were polluted from more than a century of industrial and municipal wastewater discharges, and caused multiple grassroots organizations to advocate for cleanup measures along the river. —Maya Wilkins, Chicago Tribune, 26 Aug. 2025

My experience of the internet, when constrained to apps, has become further polluted by an inability to turn off ads. —Lucy Handley, Big Think, 25 Aug. 2025

Plaintiffs also proved that runoff and wastewater discharge from the camp risks polluting the water supply in the Miccosukee Reserved Area—where eighty percent of Tribe members reside—just a few miles downstream from the TNT site, and beyond. —Jillian Frankel, People.com, 22 Aug. 2025

Word History

Etymology

Middle English, from Latin pollutus, past participle of polluere, from por- (akin to Latin per through) + -luere (akin to Latin lutum mud, Greek lyma dirt, defilement) — more at for

First Known Use

14th century, in the meaning defined at sense 1a

Rhymes for pollute

• acute
• aleut
• astute
• beetroot
• breadfruit
• cheroot
• commute
• compute
• confute
• dilute
• dispute
• elute

Kids Definition

pollute

verb

pol·​lute pə-ˈlüt 

polluted; polluting

: to make impure

especially : to spoil (as a natural resource) with waste made by humans

industrial wastes polluted the river

Medical Definition

pollute

transitive verb

pol·​lute pə-ˈlüt 

polluted; polluting

1

: to make physically impure or unclean

2

: to contaminate (an environment) especially with anthropogenic waste

polluter noun

pollutive

-ˈlüt-iv 

adjective