linguistic purism; linguistic protectionism
A linguistics term referring to the belief or practice of keeping a language free from foreign elements, often by promoting native words over loanwords.
Movements for linguistic purism sometimes aim to eliminate loanwords.
アイスランドでは言語純化が盛んで、新しい概念にも固有語を作る。
In Iceland, linguistic purism is strong, and they coin native words even for new concepts.