extinct language

An extinct language is a language which no longer has any native speakers, in contrast to a dead language, which is a language which has stopped changing in grammar, vocabulary, and the complete meaning of a sentence. Normally this conversion to an extinct language occurs when a language undergoes language death while being directly replaced by a different one. For example: Coptic, which was replaced by Arabic, and many Native American languages, which were replaced by English, French, Spanish, or Portuguese.
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