An endangered is a language that it is at risk of falling out of use, generally because it has few surviving speakers.

If it loses all of its native speakers, it becomes a language that it is at risk of falling out of use, generally because it has few surviving speakers.

If it loses all of its native speakers, it becomes an extinct.

UNESCO defines four levels of language endangerment between "safe" (not endangered) and "extinct":[1] The languages listed below are endangered in Nepal, although they may be vibrant in other countries.