CONTAMINATE Synonyms: 40 Similar and Opposite Words

Q: How does the verb 'contaminate' contrast with its synonyms?

Some common synonyms of contaminate are defile , pollute , and taint . While all these words 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

Q: When can 'defile' be used instead of 'contaminate'?

Although the words defile and contaminate have much in common, 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 'pollute' a more appropriate choice than 'contaminate'?

The synonyms pollute and contaminate are sometimes interchangeable, but 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 is it sensible to use 'taint' instead of 'contaminate'?

The words taint and contaminate are synonyms, but do differ in nuance. Specifically, taint stresses the loss of purity or cleanliness that follows contamination. // tainted meat // a politician's tainted reputation

contaminate

verb

kən-ˈta-mə-ˌnāt

Definition of contaminate next

as in to pollute

to make unfit for use by the addition of something harmful or undesirable a supply of drinking water that was contaminated by a toxic waste dump

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How does the verb contaminate contrast with its synonyms?

Some common synonyms of contaminate are defile, pollute, and taint. While all these words 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

When can defile be used instead of contaminate?

Although the words defile and contaminate have much in common, 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 pollute a more appropriate choice than contaminate?

The synonyms pollute and contaminate are sometimes interchangeable, but 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 is it sensible to use taint instead of contaminate?

The words taint and contaminate are synonyms, but do differ in nuance. Specifically, 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 contaminate The use of products contaminated with Burkholderia cepacia complex and Burkholderia gladioli may result in serious and life-threatening infections, according to the FDA. —

Michele Laufik, Martha Stewart, 8 June 2026 Haleon pulled Gas-X Extra Strength Softgels 125mg because they might have been contaminated with a coolant when a machine leaked during packaging. —

David J. Neal, Miami Herald, 7 June 2026 Raw foods should be stored on the bottom shelf of the fridge so that in case of leakage, any spills won't drip down and contaminate other foods. —

Kait Hanson, Southern Living, 7 June 2026 Avoid dirty or cracked eggs, which may be contaminated with harmful bacteria. —

Katlyn Moncada, Better Homes & Gardens, 5 June 2026 See All Example Sentences for contaminate

Recent Examples of Synonyms for contaminate

Verb

Nothing in art about their being polluting.

— Literary Hub, Literary Hub, 10 June 2026
Unless the energy powering data centers comes from clean energy sources, such as solar, wind or geothermal, generating that electricity also pollutes the air.

— Ed Maibach, The Conversation, 8 June 2026