Where does “ckoi” come from?

ckoi (French) comes from French koi, from Japanese 鯉, from Old Japanese こい.

Ancestry of “ckoi”, step by step

ckoi traces back through two separate lines of ancestry.

via French koi

StepLanguageWordMeaning
1FrenchkoiAlternative spelling of quoi
2Japanesecarp, specifically, the common carp
3Old Japaneseこい

via French c

StepLanguageWordMeaning
1Frenchc
Every word from Old Japanese こいEvery word from Japanese Every word from French koi
ckoi — Etymology, Origin & Word History | Etymology Explorer