名詞 nihilism:

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
   同義詞：nihilistic delusion
3. complete denial of all established authority and institutions

ni.hil.ism

n.（名詞）
Philosophy
【哲學】
An extreme form of skepticism that denies all existence.
虛無主義：懷疑論的一種極端形式，否認一切存在
A doctrine holding that all values are baseless and that nothing can be known or communicated.
虛無主義學說：認為一切價值觀念都毫無根據且一切都是不可知或不可交流的一種學說
Rejection of all distinctions in moral or religious value and a willingness to repudiate all previous theories of morality or religious belief.
道德虛無主義：否認所有道德及宗教價值觀的特點并意欲否定所有先前的有關道德及宗教信價的理論
The belief that destruction of existing political or social institutions is necessary for future improvement.
無政府主義：認為對現存政治或社會組織的破壞是有利于未來改進的一種信念
Also Nihilism A diffuse, revolutionary movement of mid 9th-century Russia that scorned authority and tradition and believed in reason, materialism, and radical change in society and government through terrorism and assassination.
也作 Nihilism 無政府主義運動：發(fā)生在9世紀中期俄國的一次革命活動，藐視政權和傳統(tǒng)觀念，主張理性、物質主義以及通過恐怖手段和暗殺使及社會和政府發(fā)生激進性變化
Psychiatry A delusion, experienced in some mental disorders, that the world or one`s mind, body, or self does not exist.
【精神病學】 虛無幻覺：在某些精神錯亂中出現的一種幻覺，認為整個世界或一個人的思想、身軀或自己本身根本不存在

來源：
Latin nihil [nothing] * see ne
拉丁語 nihil [沒] *參見 ne
-ism
-ism

【引伸】
ni.hilist
n.（名詞）
ni.hilis.tic
adj.（形容詞）
ni.hilis.tically
adv.（副詞）