Definition of adulterate verb from the Oxford Advanced Learner's Dictionary

 

adulterate

 verb
verb
BrE BrE//əˈdʌltəreɪt//
 
; NAmE NAmE//əˈdʌltəreɪt//
 
Verb Forms present simple I / you / we / they adulterate
BrE BrE//əˈdʌltəreɪt//
 
; NAmE NAmE//əˈdʌltəreɪt//
 
he / she / it adulterates
BrE BrE//əˈdʌltəreɪts//
 
; NAmE NAmE//əˈdʌltəreɪts//
 
past simple adulterated
BrE BrE//əˈdʌltəreɪtɪd//
 
; NAmE NAmE//əˈdʌltəreɪtɪd//
 
past participle adulterated
BrE BrE//əˈdʌltəreɪtɪd//
 
; NAmE NAmE//əˈdʌltəreɪtɪd//
 
-ing form adulterating
BrE BrE//əˈdʌltəreɪtɪŋ//
 
; NAmE NAmE//əˈdʌltəreɪtɪŋ//
 
 
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[often passive] adulterate something (with something) to make food or drink less pure by adding another substance to it synonym contaminate The water supply had been adulterated with chemicals from the soil. see also unadulterated Word Origin early 16th cent.: from Latin adulterat- ‘corrupted’, from the verb adulterare.
See the Oxford Advanced American Dictionary entry: adulterate