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disillusion

 
/ˌdɪs·əˈlu·ʒən/ v [T]

Definition

to disappoint someone by making the person realize the unpleasant truth about something or someone thought to be good: He’s become disillusioned with his job and the company. disillusioned
 
/ˌdɪs·əˈlu·ʒənd/ adj
He died a disillusioned man.
disillusionment
 
/ˌdɪs·əˈlu·ʒən·mənt/ n [U]
(Definition of disillusion v from the Cambridge Academic Content Dictionary © Cambridge University Press)

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