adulterate
/əˈdʌltəˌreɪt/
verb
- To make something impure or lower in quality by adding another substance, often illegally or dishonestly.
- Some dishonest sellers adulterate honey with sugar syrup to save money.
- The company was caught trying to adulterate their fuel with cheaper chemicals.
- It is illegal to adulterate food products with unapproved ingredients.
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