Language loss

Normally the transition from a dead to an extinct language occurs when a language undergoes language death while being directly replaced by a different one. For example, Native American languages were replaced by English, French, Portuguese, or Spanish as a result of colonization. The Coptic language, replaced by Arabic in its native Egypt, was once thought to be extinct.

Language extinction may also occur when a language evolves into a new language or family of languages. An example of this was Old English, a forerunner of Modern English.

By contrast to an extinct language which no longer has any speakers, a dead language may remain in use for scientific, legal, or ecclesiastical functions. Old Church Slavonic, Avestan, Coptic, Biblical Hebrew, Ge'ez, Latin, and Sanskrit are among the many dead languages used as sacred languages.

Alternatively, a language is said to be extinct if, although it is known to have been spoken by people in the past, modern scholarship cannot reconstruct it to the point that it is possible to write in it or translate into it with confidence (say, a simple dialogue or a short tale written in a modern language); whereas a language is referred to as dead, but not extinct, if it is sufficiently known at present to permit such routine use, even though it has no modern speakers. By these definitions Proto-Indo-European (of which only conjectural reconstructions of lexicon and grammar exist) is an extinct language, and Classical Latin and Old Tupi are dead, but not extinct languages.

A language that has living native speakers is called a modern language. Ethnologue records 6,912 living languages known.^[3]

Hebrew is an example of a nearly extinct spoken language (by the first definition above) that became a lingua franca and a liturgical language that has been revived to become a living spoken language. There are other attempts at language revival. For example, young school children use Sanskrit in revived language in Mathoor village (India)^[4] In general, the success of these attempts has been subject to debate, as it is not clear they will ever become the common native language of a community of speakers.

It is believed that 90% of the circa 7,000 languages currently spoken in the world will have become extinct by 2050, as the world's language system, after evolving for centuries, has reached a crisis and is dramatically restructuring.^[5][6]