Proto-Turkic *kudruk

→ Southern Altai куйрук (inherited)

→ Azerbaijani quyruq (inherited)

→ Bashkir ҡойроҡ (inherited)

→ Dolgan кутурук (inherited)

→ Khakas хузурух (inherited)

→ Kazakh құйрық (inherited)

→ Kumyk къуйрукъ (inherited)

→ Kyrgyz куйрук (inherited)

→ Mongolian хударга (derived)

→ Old Turkic 𐰴𐰆𐰑𐰺𐰆𐰸 (inherited)

→ Russian курдюк (derived)

→ Turkmen guýruk (inherited)

→ Turkish kuyruk (inherited)

→ Tuvan кудурук (inherited)

→ Uzbek quyruq (inherited)