im·pa·tience /(ˌ)ɪmˈpeʃən(t)s/
  性急,難耐,焦急,急躁,渴望
  Im·pa·tience n.  The quality of being impatient; lack 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.
  I then, . . .
  Out of my grief and my impatience,
  Answered neglectingly.   --Shak.
  With huge impatience he inly swelt
  More for great sorrow that he could not pass,
  Than for the burning torment which he felt.   --Spenser.
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  impatience
       n 1: a lack of patience; irritation with anything that causes
            delay [syn: restlessness]
       2: a restless desire for change and excitement
       3: a dislike of anything that causes delay [ant: patience]