tediousness
  沈悶
  Te·di·ous a.  Involving tedium; tiresome from continuance, prolixity, slowness, or the like; wearisome. -- Te*di*ous*ly, adv. -- Te*di*ous*ness, n.
     I see a man's life is a tedious one.   --Shak.
     I would not be tedious to the court.   --Bunyan.
  Syn: -- Wearisome; fatiguing. See Irksome.
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  tediousness
       n : dullness owing to length or slowness [syn: tedium, tiresomeness]