Hittite language
According to Diakonoff, the name is derived by [[Metathesis (linguistics)|metathesis]] from the name of the country called "Suḫmu" in [[Akkadian language|Akkadian]] and "Zuhma" in [[Hittite language|Hittite]], located in the [[Upper Euphrates Valley|upper Euphrates valley]], close to [[South Caucasian peoples|South-Caucasian tribes]], and is presumed to have been inhabited by Proto-Armenians.