fiend /ˈfind/
  魔鬼,邪神,能手,成癖者
  fiend n.  An implacable or malicious foe; one who is diabolically wicked or cruel; an infernal being; -- applied specifically to the devil or a demon.
  Into this wild abyss the wary fiend
  Stood on the brink of Hell and looked a while.   --Milton.
  O woman! woman! when to ill thy mind
  Is bent, all hell contains no fouler fiend.   --Pope.
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  fiend
       n 1: a cruel wicked and inhuman person [syn: monster, devil,
            demon, ogre]
       2: one of the evil spirits of traditional Jewish and Christian
          belief [syn: devil, demon, daemon, daimon]
       3: a person motivated by irrational enthusiasm (as for a
          cause); "A fanatic is one who can't change his mind and
          won't change the subject"--Winston Churchill [syn: fanatic]