Etymology
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brainwash (v.)

1955 (past-participle adjective brainwashed attested from 1953); see brainwashing.

updated on December 12, 2012

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Definitions of brainwash from WordNet

brainwash (v.)
persuade completely, often through coercion;
The propaganda brainwashed many people
brainwash (v.)
submit to brainwashing; indoctrinate forcibly;
From wordnet.princeton.edu, not affiliated with etymonline.