noun (n)

• an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)(noun.feeling)

  Synonym:
  fear, fright
  Antonym:
  bravery, fearlessness
  

  source: wordnet30
• the trait of being afraid(noun.attribute)

  Antonym:
  fearlessness
  

  source: wordnet30
• The state of being fearful.(noun)

  source: webster1913