terror

Very strong or intense fear.

Example: I never felt such terror as when I was robbed at gunpoint.

Something that causes such fear.

Example: The rabid dog was the terror of the neighborhood.

Violence or the threat of violence for political reasons; terrorism.

Example: The United States has declared a war on terror.

An annoying or unpleasant person, often a naughty child.

Example: My little brother can be such a terror!