ca·lam·i·tous /kəˈlæmətəs/
  (a.)多災難的,不幸的
  Ca·lam·i·tous a.
  1. Suffering calamity; wretched; miserable. [Obs.]
     Ten thousands of calamitous persons.   --South.
  2. Producing, or attended with distress and misery; making wretched; wretched; unhappy. “This sad and calamitous condition.” --South. “A calamitous prison” --Milton.
  Syn: -- Miserable; deplorable; distressful; afflictive; wretched; grievous; baleful; disastrous; adverse; unhappy; severe; sad; unfortunate.
  -- Ca*lam*i*tous*ly, adv. -- Ca*lam*i*tous*ness, n.
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  calamitous
       adj : (of events) having extremely unfortunate or dire
             consequences; bringing ruin; "the stock market crashed
             on Black Friday"; "a calamitous defeat"; "the battle
             was a disastrous end to a disastrous campaign"; "such
             doctrines, if true, would be absolutely fatal to my
             theory"- Charles Darwin; "it is fatal to enter any war
             without the will to win it"- Douglas MacArthur; "a
             fateful error" [syn: black, disastrous, fatal, fateful]