extremism
n. 极端主义(尤指政治上的极右或极左);极端性;过激主义
例句
Greater demands were being placed on the police by growing violence and left and right-wing extremism.
不断增加的暴行和左翼右翼极端主义使得需要更多警力。
《柯林斯英汉双解大词典》
Counter Baloch extremism in Iran.
对抗伊朗的俾路支极端分子。
Instead it blames homegrown extremism.
但是它谴责了本国的极端主义。