Tuvan куу

← Southern Altai куу (cognate)

← Azerbaijani qu (cognate)

← Shor қуу (cognate)

← Turkmen guw (cognate)

← Turkish kuğu (cognate)

← Proto-Turkic *Kuba (inherited)

← Proto-Turkic *kugu (inherited)

→ Southern Altai куу (cognate)