noun (n)

• a lack of patience; irritation with anything that causes delay(noun.state)

  Synonym:
  restlessness
  

  source: wordnet30
• a restless desire for change and excitement(noun.feeling)

  source: wordnet30
• a dislike of anything that causes delay(noun.attribute)

  Antonym:
  forbearance, longanimity, patience
  

  source: wordnet30
• The quality of being impatient; want of endurance of pain, suffering, opposition, or delay; eagerness for change, or for something expected; restlessness; chafing of spirit; fretfulness; passion; as, the impatience of a child or an invalid.(noun)

  source: webster1913