Where does “Ağsu” come from?

Ağsu (Azerbaijani) comes from Azerbaijani su, from Old Anatolian Turkish şol, from Old Anatolian Turkish uş ol.

Ancestry of “Ağsu”, step by step

Ağsu traces back through two separate lines of ancestry.

via Azerbaijani su

StepLanguageWordMeaning
1Azerbaijanisuwater; juice
2Old Anatolian Turkishşol—
3Old Anatolian Turkishuş ol—

via Azerbaijani ağ

StepLanguageWordMeaning
1Azerbaijaniağwhite
2Proto-TurkicĀkwhite
Every word from Old Anatolian Turkish uş ol →Every word from Old Anatolian Turkish şol →Every word from Azerbaijani su →
Ağsu — Etymology, Origin & Word History | Etymology Explorer