to force someone to accept a particular set of beliefs by repeating the same idea many times so that the person cannot think in an independent way 对…进行洗脑；强迫…接受某种思想
Her father said she had been brainwashed by a bizarre religious cult. 她的父亲说她被一种怪诞的邪教洗了脑。
brainwash sb into doing sth People have been brainwashed into believing they need this stuff. 人们被洗了脑，认为自己需要这种东西。