adulterant
/əˈdʌltərənt/
noun
- A substance added to another substance to make it impure or lower in quality, often illegally or dishonestly.
- Some spices are mixed with an adulterant like ground rice to increase profits.
- The company was fined for using a cheap adulterant in their olive oil.
- Tests found an adulterant in the milk that was not listed on the label.
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