Where does “joutsut” come from?

joutsut (Ingrian) comes from Ingrian joutsen, from Proto-Finnic jouc'en, from Proto-Finno-Ugric joŋkće.

Ancestry of “joutsut”, step by step

StepLanguageWordMeaning
1Ingrianjoutsen—
2Proto-Finnicjouc'enswan
3Proto-Finno-Ugricjoŋkće—
Every word from Proto-Finno-Ugric joŋkće →Every word from Proto-Finnic jouc'en →Every word from Ingrian joutsen →