Where does “ja” come from?

ja (Afrikaans) comes from Dutch ja, from Middle Dutch ja, from Old Dutch jā, from Proto-West Germanic jā, from Proto-Germanic ja, from Proto-Indo-European yē — already.

ja (Afrikaans): yes

Definitions

Ancestry of “ja”, step by step

Step	Language	Word	Meaning
1	Dutch	ja	yes; yes!
2	Middle Dutch	ja	—
3	Old Dutch	jā	—
4	Proto-West Germanic	jā	yes; thus, so
5	Proto-Germanic	ja	yes; thus, so
6	Proto-Indo-European	yē	already

Words derived from “ja”

Every word from Proto-Indo-European yē →Every word from Proto-Germanic ja →Every word from Proto-West Germanic jā →