激進

radical / extreme / extremist

to arouse / to incite / to excite / to stimulate / sharp / fierce / violent

to go forward / to advance / to go in / to enter / to put in / to submit / to take in / to admit / (math.) base of a number system / classifier for sections in a building or residential compound

radicalization / to radicalize

radicalism

armed extremists

radicals; extremists

armed extremists