Where does “ja” come from?

ja (Ingrian) comes from Proto-Germanic ja, from Proto-Indo-European yē — already.

ja (Ingrian): and

Definitions

  1. and

Ancestry of “ja”, step by step

StepLanguageWordMeaning
1Proto-Germanicjayes; thus, so
2Proto-Indo-Europeanyēalready
Every word from Proto-Indo-European yē →Every word from Proto-Germanic ja →
ja — Etymology, Origin & Word History | Etymology Explorer