Where does “all” come from?

all (Ingrian) comes from Proto-Finnic alla, from Proto-Uralic -na — at, in.

all (Ingrian): under, underneath

Definitions

Step	Language	Word	Meaning
1	Proto-Finnic	alla	under
2	Proto-Uralic	-na	at, in

all — Etymology, Origin & Word History | Etymology Explorer