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Etymology

The exonym Yakut comes from the Evenk term Yako (also yoqo, ñoqa, or ñoka), which was the term the Evenks used to describe the Sakha. This was in turn picked up by the Russians. The Yukaghirs, another neighboring people in Siberia, use the exonym yoqol ~ yoqod- ~ yoqon- (Tundra Yukaghir) or yaqal ~ yaqad- ~ yaqan- (Kolyma Yukaghir).

The self-designation Sakha is probably of the same origin (* jaqa > Sakha following regular sound changes in the course of development of the Yakut language) as the Evenk and Yukaghir exonyms for the Yakuts. It is pronounced as Haka by the Dolgans, whose language is a close relative of the Yakut language.