мәңге • (mäñge)
From Old Turkic beŋgü, beŋkü, beŋü, meŋgü, meŋü "eternal; monument". Further derivation is disputed.
Ramstedt suggests derivation from Middle Chinese 萬古 (mjonH kuX, “eternal”).
Cognate with Kazakh мәңгі (mäñgi), Kyrgyz маңги (mañgi), меңги (meñgi), Uzbek mangu, Tuvan мөңге (möŋgä), Yakut мэҥэ (meŋe), Turkish bengi (“eternal”).