marginalize
verb [ T often passive ] (UK usually marginalise) uk/ˈmɑː.dʒɪ.nəl.aɪz/ us/ˈmɑːr.dʒɪ.nəl.aɪz/
使边缘化；忽视；排斥
to treat someone or something as if they are not important
Now that English has taken over as the main language, the country's native language has been marginalized. 由于英语已成为主要语言，这个国家的本国语言倒被边缘化了。