adulterate - definition and synonyms

verb [transitive] 

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/əˈdʌltəreɪt/
present tense
I/you/we/theyadulterate
he/she/itadulterates
present participleadulterating
past tenseadulterated
past participleadulterated
  1. to make a substance less pure by adding something else to it

derived word

adulteration

 

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/əˌdʌltəˈreɪʃ(ə)n/
noun [uncountable]