1. to cause someone to adopt radical political, social, or religious views
2. to become radical in political, social, or religious views

Examples

• The propaganda was designed to radicalize young people.
• His experiences in prison began to radicalize him.
• The group’s goal was to radicalize students on campus.
• She became radicalized after witnessing the injustice.
• Online forums can radicalize vulnerable individuals.
• The movement sought to radicalize workers against the system.
• Economic hardship helped radicalize the population.