English to English

noun (n)

• the quality of being guided by sudden unpredictable impulses(noun.attribute)

  Synonym:
  capriciousness
  

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

  Synonym:
  volatility
  

  source: wordnet30
• lacking predictability(noun.attribute)

  Antonym:
  predictability
  

  source: wordnet30