in ‧ doc ‧ tri ‧ nate /ɪnˈdɒktrəneɪt, ɪnˈdɒktrɪneɪt $ ɪnˈdɑːk-/ BrE AmE verb [transitive]
[ Date: 1600-1700 ; Language: Old French ; Origin: endoctriner , from doctrine ; ⇨ ↑ doctrine ]
to train someone to accept a particular set of beliefs, especially political or religious ones, and not consider any others:
People were indoctrinated not to question their leaders.
—indoctrination /ɪnˌdɒktrəˈneɪʃ ə n, ɪnˌdɒktrɪˈneɪʃ ə n $ ɪnˌdɑːk-/ noun [uncountable] :
The military in particular were subjected to intense political indoctrination.