adulterated

/əˈdʌltəˌreɪtɪd/
adjective
  1. Made impure or weaker by adding something of lower quality or a harmful substance.
    • Health officials warned the public about adulterated alcohol sold at illegal bars.
    • The lab found that the olive oil was adulterated with cheaper vegetable oil.
    • The company recalled its baby formula after tests showed it was adulterated with melamine.
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