verb (used with object), de·rad·i·cal·ized, de·rad·i·cal·iz·ing.
  1. to free from radical ideas, goals, or elements: The more conservative politicians were trying to deradicalize the liberation movement.
Also especially British, de·rad·i·cal·ise.

Origin of deradicalize

First recorded in 1970–75; de- + radical + -ize
Related formsde·rad·i·cal·i·za·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018