Where does “Yedisu” come from?

Yedisu (Turkish) comes from Turkish su, from French soutache, from Hungarian sujtás, from Hungarian -ás — Added to a verb to form a noun.

Ancestry of “Yedisu”, step by step

Yedisu traces back through two separate lines of ancestry.

via Turkish su

StepLanguageWordMeaning
1Turkishsuwater; juice
2Frenchsoutache
3Hungariansujtássoutache
4Hungarian-ásAdded to a verb to form a noun

via Turkish yedi

StepLanguageWordMeaning
1Turkishyediseven; third-person singular past definite...
2Ottoman Turkishیدیseven
3Proto-Turkicyẹt(t)iseven
Every word from Hungarian -ás
Yedisu — Etymology, Origin & Word History | Etymology Explorer