adulterate
Americanverb (used with object)
-
adulterates,
present (3rd person singular)
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adulterated,
past participle, past
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adulterating
present participle
adjective
-
impure or debased; cheapened in quality or purity.
verb
adjective
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adulterated; debased or impure
-
a less common word for adulterous
Usage
What does adulterate mean? To adulterate means to make something impure or alter its original form by adding materials or elements that aren’t usually part of it, especially inferior ones. Adulterate is commonly used in the context of food preparation and manufacturing in reference to the contamination of food products with additives that make them impure in some way. There are laws against this, especially when the ingredients added may be harmful to people’s health. It can also be used in a less serious way to refer to adding ingredients thought to be unnecessary, as in I would never adulterate coffee with sugar or cream. Adulterate is also commonly used in a more general way to refer to any action that alters something in a way that people think makes it impure or inferior. The noun form of adulterate is adulteration. The past tense form adulterated can also be used as an adjective, as in Officials confiscated the adulterated foods. Less commonly, adulterate itself can also be used as an adjective in the same way. Example: Some sellers were caught adulterating the spices by adding fillers.
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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adulteratesimple
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adulteratessimple
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have adulteratedperfect
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has adulteratedperfect
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am adulteratingprogressive
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are adulteratingprogressive
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is adulteratingprogressive
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have been adulteratingperfect progressive
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has been adulteratingperfect progressive
Past
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adulteratedsimple
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had adulteratedperfect
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was adulteratingprogressive
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were adulteratingprogressive
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had been adulteratingperfect progressive
Future
Etymology
Origin of adulterate
1580–90; < Latin adulterātus mixed, adulterated (past participle of adulterāre ), equivalent to ad- ad- + -ulter (perhaps combining form of alter other; see alter) + -ātus -ate 1
Explanation
If you adulterate something, you mess it up. You may not want to adulterate the beauty of freshly fallen snow by shoveling it, but how else are you going to get to work? The verb adulterate comes from the Latin word adulterare, which means “to falsify,” or “to corrupt.” Whenever something original, pure, fresh, or wholesome is marred, polluted, defaced, or otherwise made inferior, it has been adulterated. A vitamin company might issue a recall if they learn that one of their products was adulterated during production. And if you hate dried fruit, you might complain that your grandma adulterates her oatmeal cookies with raisins.
Vocabulary lists containing adulterate
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Grade 10, List 3
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
It is one thing to alter the competition, another to adulterate or corrupt it - La Liga accepts the first suggestion, but not the second.
From BBC ● Oct. 22, 2025
Now, he can rest easy: There's no economic incentive to adulterate his product.
From Salon ● Aug. 2, 2023
Little five-spice seasoning or herbs adulterate this meat.
From Seattle Times ● Nov. 14, 2021
In 2008, at least 81 people died from a poisoned blood thinner traced back to a Chinese supplier in what has been described as a “deliberate scheme to adulterate a lifesaving medication.”
From New York Times ● Sep. 18, 2021
This word among metallists is used to signify any metal that will not undergo the trial, that betrays itself to be adulterate or reprobate, and of a coarse alloy.
From The Doctrines of Predestination, Reprobation, and Election by Robert Wallace
But no matter how any culture adulterates this, chicken soup remains a familiar, familial elixir that hearkens back to when your mom simmered a pot for you on a cold, damp day.
From Seattle Times ● Mar. 16, 2023
L invades her home, adulterates it with his grimace, and then turns his canvas in another direction.
From Los Angeles Times ● Apr. 28, 2021
Schamus cuts or adulterates everything in the novel that’s an audacity of form or a leap of vision.
From The New Yorker ● Aug. 2, 2016
This triangulating trend developed overseas: For the European market, Coca-Cola adulterates its Fanta with acesulfame-K and aspartame, and slips stevia into its cans of Sprite.
From Slate ● May 13, 2013
When the will is in evil, it adulterates good in the understanding, and good adulterated in the understanding is evil in the will, for it confirms that evil is good and good is evil.
From Angelic Wisdom about Divine Providence by William F. Wunsch
Promoting slum clearance and clean water while preventing adulterated food addressed popular grievances while offering competent, uncontroversial government.
From The Wall Street Journal ● Jul. 12, 2026
Prices doubled, and gas stations began selling adulterated fuel that damaged many vehicles.
From Barron's ● May 21, 2026
Zhu’s partner, Wang, is charged with conspiracy to commit wire fraud, wire fraud and distribution of adulterated and misbranded medical devices in connection with the case.
From Los Angeles Times ● May 7, 2026
Jeff Pettis, the federation’s president, said that they were "continuing to fight for improvements to the testing" and that he wanted "the public to know that local honey is much less likely to be adulterated."
From BBC ● Nov. 30, 2024
Cato and Pliny had said that a bottle made of ivy could be used to establish whether wine had been adulterated with water, as the wine would be expelled, leaving the water behind.
From "The Invention of Science" by David Wootton
"It's totally adulterating the competition," Courtois told a news conference.
From Barron's ● Oct. 21, 2025
So for example, not adulterating: I didn't write with any actors in mind.
From Salon ● Aug. 12, 2024
The buying spree followed the melamine crisis when Chinese producers had been adulterating milk, baby formula and other foods with melamine, a chemical that is toxic in large quantities, to increase their apparent protein content.
From The Guardian ● Feb. 23, 2020
For example, a decade after Chinese milk producers were revealed to be adulterating infant formula, Chinese parents still shun the country’s dairy industry and distrust of food producers remains almost universal.
From The Verge ● Jul. 10, 2019
To obtain this without any adulterating admixture and in all purity was essential to success; and he determined to set out immediately for Dublin, where he could himself assist in its preparation.
From One Of Them by Charles James Lever
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
