Where does “үзбек” come from?

үзбек (Mongolian) comes from Russian узбек, from Uzbek oʻzbek, from Chagatai اوزبک — a certain Turkic tribe near Bukhara and Khiva.

Ancestry of “үзбек”, step by step

StepLanguageWordMeaning
1RussianузбекUzbek
2UzbekoʻzbekUzbek
3Chagataiاوزبکa certain Turkic tribe near Bukhara and Khiva
Every word from Chagatai اوزبک →Every word from Uzbek oʻzbek →Every word from Russian узбек →