purism
['pjʊərɪzəm]
n.
纯粹主义（指在语言，艺术等方面过于严格遵守传统规范），纯粹派（法国20世纪初的一个艺术流派）;
纯语主义;
例句:
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Germans have alternated between periods of profligate borrowing and staunch purism.
来自Dictionaries
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There are at least two difficulties with this purism.
来自NEWYORKER
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This is music made by musicians who could care less for purism.
来自BBC