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(xué)】
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(rèn)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(xué)說：認(rèn)為一切價值觀念都毫無根據(jù)且一切都是不可知或不可交流的一種學(xué)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(rèn)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(guān)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(rèn)為對現(xiàn)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(jì)中期俄國的一次革命活動，藐視政權(quán)和傳統(tǒng)觀念，主張理性、物質(zhì)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(xué)】 虛無幻覺：在某些精神錯亂中出現(xiàn)的一種幻覺，認(rèn)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）