Degree of endangerment is an evaluation assigned by UNESCO to the languages in the Atlas of the World's Languages in Danger. Atlas of the World's Languages in Danger // UNESCO Evaluation is given according to nine criteria, the most important of which is the criterion of language transmission between generations.Christopher Moseley, 2010, Atlas of the World's Languages in Danger, Paris, UNESCO
Degree of endangerment Status Explanation Examples Safe The language is used by all generations. The transmission of the language from generation to generation is not disturbed English, Arabic, Spanish, German, Russian, Ukrainian, French Vulnerable The language is used by most children, but it is used with some restrictions. For example, they speak this language only at home. Adyghe, Anal, Bashkir, Belarusian, Chuvash, Neapolitan, Yiddish Definitely endangered The language is not learned by children as a native Erzya, Mari, Newar, Romani, Udmurt, Walloon Severely endangered The language is used by older generations and is understandable to parents, but they do not use it when communicating with children and among themselves Breton, Ingrian, Judaeo-Spanish, Nafusi, Nanai Language revitalization The language is in the process of being restored Cornish, Manchu, Manx Critically endangered languages Only old people know the language and it is rarely used by them Dahalik, Duruwa, Orok, Tofa, Ulch Extinct language1. There are no living native speakers in the world 2. Previously, the language definitely existed, but now there is no reliable information about its state 1. Dalmatian, Obispeño, Gothic2. Ancient Cappadocian, Livonian, Yukaghir
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