Noun nihilism has 3 senses
  1. nihilism - a revolutionary doctrine that advocates destruction of the social system for its own sake
    --1 is a kind of
    doctrine, philosophy, philosophical system, school of thought, ism
  2. nihilistic delusion, nihilism - the delusion that things (or everything, including the self) do not exist; a sense that everything is unreal
    --2 is a kind of delusion, psychotic belief
  3. nihilism - complete denial of all established authority and institutions
    --3 is a kind of
    anarchy, lawlessness
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