radicalise

verb (used with object), rad·i·cal·ized, rad·i·cal·iz·ing.

1. 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.

2. to become radical or more radical: The regime has increasingly radicalized since the coup.

verb (tr)

1. to make (a person) more radical

v.

1820, from radical (adj.) + -ize. Related: Radicalized; radicalizing.