*(H)ap-/up- "river"

>
> So could the former, if we reconstruct it *api ~ *upi instead (cf.
> the Ehret quote again), supposing they were AfroAsiatic loans
> (actually I think they are ultimately loans there too, given the
> Proto-AA has a root *(a)m- "water", not **-p-, and given the out-of-
> place Sanskrit 'ambu' "water". Pre-nasalisation?

I was too hasty

A-p- "mouth (of river)" Semitic

BTW Schrijver's NW European substrate 'language of bird names' has
this prefix too:
OE læwirki, Gallic alauda, Finnish leivonen "lark"
German Amsel, Latin merula "blackbird"
Greek erythros "red", Finnish rauta "iron", Sumerian urudu "copper"


Torsten