adulterant

/əˈdʌltərənt/
noun
  1. 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.
Antonyms
What does "adulterant" mean? | whatsthatwordmean | whatsthatwordmean