fanaticize

/fəˈnætɪsaɪz/
verb
  1. To make someone extremely enthusiastic or devoted to a cause, belief, or activity, often to an unreasonable degree.
    • The coach's intense methods threatened to fanaticize the players rather than motivate them.
    • The charismatic speaker tried to fanaticize the crowd with his fiery speeches.
    • Some online groups attempt to fanaticize young people by feeding them extreme ideas.
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