An extreme form of skepticism that denies all existence.
A doctrine holding that all values are baseless and that nothing can be known or communicated.
Rejection of all distinctions in moral or religious value and a willingness to repudiate all previous theories of morality or religious belief.
The belief that destruction of existing political or social institutions is necessary for future improvement.
also Nihilism A diffuse, revolutionary movement of mid 19th-century Russia that scorned authority and tradition and believed in reason, materialism, and radical change in society and government through terrorism and assassination.
Psychiatry A delusion, experienced in some mental disorders, that the world or one's mind, body, or self does not exist.
[Latin nihil, nothing; see ne in Indo-European roots + -ism.] ni'hil·ist n., ni'hil·is'tic adj., ni'hil·is'ti·cal·ly adv.
(nī'ə-lĭz'əm, nē'-) 