ni·hil·ism /ˈnaɪ(h)əˌlɪzəm, ˈni-/
  虛無主義,懷疑論,虛無主義
  Ni·hil·ism n.
  1. Nothingness; nihility.
  2. The doctrine that nothing can be known; scepticism as to all knowledge and all reality.
  3. Politics The theories and practices of the Nihilists.
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  nihilism
       n 1: a revolutionary doctrine that advocates destruction of the
            social system for its own sake
       2: the delusion that things (or everything, including the self)
          do not exist; a sense that everything is unreal [syn: nihilistic
          delusion]
       3: complete denial of all established authority and
          institutions