Meaning of “indoctrinate” - Learner’s Dictionary

indoctrinate

verb [ T ] uk us /ɪnˈdɒktrɪneɪt/

to make someone accept your ideas and beliefs by repeating them so often that they do not consider any others:

They try to indoctrinate young people with their religious beliefs.
indoctrination uk us /ɪnˌdɒktrɪˈneɪʃən/ noun [ U ]

political indoctrination

(Definition of “indoctrinate” from the Cambridge Learner’s Dictionary © Cambridge University Press)