One who uses fear as a weapon of power
A
Terrorist
B
Militant
C
Extremist
D
Anarchist
Correct Answer: Terrorist
One word substitute is Terrorist.Terrorist: a person who uses unlawful violence and intimidation, especially against civilians, in the pursuit of political aims.
Militant: favouring confrontational or violent methods in support of a political or social cause.
Extremist: favouring confrontational or violent methods in support of a political or social cause.
Anarchist: a person who believes in or tries to bring about anarchy.