D defs.my
Entry 2 senses Webster, 1913

Nihilist

· Ni·hil·ist · IPA /ˈnaɪ.(h)ɪl.ɪst/
01 n. One who advocates the doctrine of nihilism; one who believes or teaches that nothing can be known, or asserted to exist.
  1. 1.
    One who advocates the doctrine of nihilism; one who believes or teaches that nothing can be known, or asserted to exist.
  2. 2.
    A member of a secret association (esp. in Russia), which is devoted to the destruction of the present political, religious, and social institutions.(Politics)