denied a previous confession … saying that he had been brainwashed—Front Page Detective
told how he had been brainwashed for 527 days in jail—Ed Sullivan
2
: to persuade by propaganda
brainwash the voters
brainwashernoun
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