deradicalizeverb [ T ]
UK usually deradicalise /ˌdiːˈræd.ɪ.kəl.aɪz/to make someone become less radical (= extreme) in their political or religious beliefs:
attempts to deradicalize convicted terrorists
deradicalization
noun [ U ] UK usually deradicalisation /diˌræd.ɪ.kə.laɪˈzeɪ.ʃən/
He questioned the success rate of the country's deradicalization programs.