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adulterate

/əˈdʌl.tər.eɪt/
IELTSAcademic
verb
  1. 1.

    To make something impure by adding a cheaper or harmful substance. It is often used for food, drink, medicine, or materials.

    • They adulterated the milk with water.
    • The company was accused of adulterating the oil.
  2. 2.

    To spoil the quality or truth of something by mixing in something unwanted. This use is more formal and can be literal or figurative.

    • The report was adulterated with false data.
    • Bad editing adulterated her clear argument.

Adinary Nuance

Adulterate is stronger and more negative than mix or blend. It usually suggests cheating, damage, or impurity, especially with food, medicines, or facts. Writers choose it when they want to show that something has been made worse on purpose. It is more formal than everyday words like water down.

In other languages

Vietnamese
pha tạp
Spanish
adulterar
Chinese
掺假
Japanese
不純にする
Korean
불순하게 하다

Etymology

Adulterate comes from Latin adulterare, meaning “to corrupt” or “to make false.” It entered English in the late 15th century.

Common phrases

adulterated foodadulterated milkadulterated with wateradulterate the data

Synonyms

Related words

Frequently asked questions

Is adulterate a formal word?
Yes. It is more formal than everyday words like "mix" or "water down".
What is the difference between adulterate and contaminate?
Adulterate often means adding something harmful or cheaper on purpose. Contaminate is broader and can mean making something dirty or unsafe.
Can adulterate be used for data or writing?
Yes. It can mean spoiling something by adding false or bad information.
Is adulterate common in daily speech?
No. It is more common in writing, news reports, and academic English.