verb (used with object), rad·i·cal·ized, rad·i·cal·iz·ing.
to make radical or more radical, as in politics: young people who are being radicalized by extremist philosophies.
verb (used without object), rad·i·cal·ized, rad·i·cal·iz·ing.
to become radical or more radical: The regime has increasingly radicalized since the coup.
Also especially British, rad·i·cal·ise.
Origin of radicalize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
to make (a person) more radical
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper