1. making someone extremely enthusiastic about or devoted to a particular cause, belief, or activity
Usage: present participle of fanaticize; rare

Examples

• The charismatic speaker was fanaticizing the crowd with his passionate rhetoric.
• Social media algorithms risk fanaticizing users by showing only extreme viewpoints.
• The coach worried about fanaticizing young athletes about winning at all costs.
• Political movements can succeed by fanaticizing their base supporters.
• The documentary explored how certain groups go about fanaticizing new recruits.