noun (n)

• a state of agitation or turbulent change or development(noun.state)

  Example:
  Social unrest.
  

  Synonym:
  agitation, ferment, fermentation, tempestuousness
  

  source: wordnet30
• a feeling of restless agitation(noun.feeling)

  source: wordnet30
• Want of rest or repose; unquietness; sleeplessness; uneasiness; disquietude.(noun)

  source: webster1913