a set of beliefs, especially ones that you disapprove of

Thatcher is unique among her predecessors in having given the English language a brand new ism, created from her own name. 撒切尔为英语词汇增添了一个全新的“主义”，以其本人姓氏命名，这与前任各届首相相比是独一无二的。

used to form nouns that refer to social, political, or religious beliefs, studies, or ways of behaving

sexism 性别歧视

feminism 女权主义

Buddhism 佛教

an example of a way of behaving, speaking, writing, etc. that is typical of a particular person

That expression was a real Taylor-ism (= an example of behaving or speaking like Taylor). 那种表达具有典型的泰勒特征。