noun (n)

• an overwhelming feeling of fear and anxiety(noun.feeling)

  Synonym:
  affright, panic
  

  source: wordnet30
• a person who inspires fear or dread(noun.person)

  Example:
  He was the terror of the neighborhood.
  

  Synonym:
  scourge, threat
  

  source: wordnet30
• a very troublesome child(noun.person)

  Synonym:
  brat, holy terror, little terror
  

  source: wordnet30
• the use of extreme fear in order to coerce people (especially for political reasons)(noun.act)

  Example:
  He used terror to make them confess.
  

  source: wordnet30
• Extreme fear; fear that agitates body and mind; violent dread; fright.(noun)

  source: webster1913