Webster's Revised Unabridged Dictionary · 1913

Nihilism

Nihilism , noun

[Latin nihil nothing: compare French nihilisme. See Annihilate.]

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.