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

 

brainwash

 verb
verb
BrE BrE//ˈbreɪnwɒʃ//
 
; NAmE NAmE//ˈbreɪnwɔːʃ//
 
, NAmE//ˈbreɪnwɑːʃ//
 
Verb Forms present simple I / you / we / they brainwash
BrE BrE//ˈbreɪnwɒʃ//
 
; NAmE NAmE//ˈbreɪnwɔːʃ//
 
, NAmE//ˈbreɪnwɑːʃ//
 
he / she / it brainwashes
BrE BrE//ˈbreɪnwɒʃɪz//
 
; NAmE NAmE//ˈbreɪnwɔːʃɪz//
 
, NAmE//ˈbreɪnwɑːʃɪz//
 
past simple brainwashed
BrE BrE//ˈbreɪnwɒʃt//
 
; NAmE NAmE//ˈbreɪnwɔːʃt//
 
, NAmE//ˈbreɪnwɑːʃt//
 
past participle brainwashed
BrE BrE//ˈbreɪnwɒʃt//
 
; NAmE NAmE//ˈbreɪnwɔːʃt//
 
, NAmE//ˈbreɪnwɑːʃt//
 
-ing form brainwashing
BrE BrE//ˈbreɪnwɒʃɪŋ//
 
; NAmE NAmE//ˈbreɪnwɔːʃɪŋ//
 
, NAmE//ˈbreɪnwɑːʃɪŋ//
 
 
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to force somebody to accept your ideas or beliefs, for example by repeating the same thing many times or by preventing the person from thinking clearly brainwash somebody The group is accused of brainwashing its young members. brainwash somebody into doing something Women have been brainwashed into thinking that they must go out to work in order to fulfil themselves. They were brainwashed into believing that their leader was all-powerful.
See the Oxford Advanced American Dictionary entry: brainwash