" terror "

[Noun]  | "ter*ror" | \ ˈter-ər \

1: a state of intense or overwhelming fear

2: violence or the threat of violence used as a weapon of intimidation or coercion; especially : violent or destructive acts (such as bombing) committed by groups in order to intimidate a population or government into granting their demands —sometimes used before another noun

3: a very frightening or terrifying aspect

Origin: 15th century ;

 Middle English, from Anglo-French terrour, from Latin terror, from terrēre to frighten; akin to Greek trein to be afraid, flee, tremein to tremble {mat|tremble|};

[Noun]  | "night terror" 

1: a sudden awakening in dazed terror that occurs in children during slow-wave sleep, is often preceded by a sudden shrill cry uttered in sleep, and is not remembered when the child awakes —usually used in plural

Origin: 1889 ;

[Noun]  | "holy terror" 

1: a child who behaves very badly

[Noun phrase]  | "reign of terror" 

1: a state or a period of time marked by violence often committed by those in power that produces widespread terror

Origin: 1784 ;

 Reign of Terror, a period of the French Revolution that was conspicuous for mass executions of political suspects;

[Adjective]  | "coun*ter*ter*ror" | \ ˌkau̇n-tər-ˈter-ər \

1: of, relating to, or being measures taken to combat or prevent terrorism : counterterrorist

Origin: 1938 ;

[Idiom]  | "hold no terror(s)" 

1: to be something that someone is not afraid of

[Noun]  | "terror"