brainwash

1 of 2

transitive verb

brain·​wash ˈbrān-ˌwȯsh How to pronounce brainwash (audio)
-ˌwäsh
Synonyms of brainwashnext
1
: to subject (a person) to brainwashing
denied a previous confession … saying that he had been brainwashedFront Page Detective
told how he had been brainwashed for 527 days in jailEd Sullivan
2
: to persuade by propaganda
brainwash the voters
brainwasher noun
plural brainwashers
To convert someone, you don't clean the brain out. You put something in it. The brainwasher impresses his victims with his own superior fanaticism and honesty. Dr. Frederick J. Hacker, quoted in People, 10 June 1974

brainwash

2 of 2

noun

brain·​wash ˈbrān-ˌwȯsh How to pronounce brainwash (audio)
-ˌwäsh
1
: the act of brainwashing
the moral savagery of the brainwashD. H. Gillis
2
: an instance of brainwashing
his brainwash in prison

Word History

Etymology

Transitive verb

back-formation from brainwashing

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Cite this Entry

“Brainwash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brainwash. Accessed 13 Dec. 2025.

Kids Definition

brainwash

verb
brain·​wash
-ˌwȯsh
-ˌwäsh
1
: to try to change someone's ideas by force
terrorists brainwashed the prisoners
2
: to try to influence someone's habits through sly persuading
advertising that brainwashes children

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