From: Piotr Gasiorowski
Message: 36037
Date: 2005-01-26
> As for the formation of the two stems, a theory I find interesting is thatIf *ph2ter- = *pah2- + *-ter- 'protector', and if nursery terms for
> the -ter affix, used for things in opposed pairs, was added to the root for
> "looking after" (peH) which we find in Latin pa:sco and elsewhere. Since it
> was stressed, the root appeared as zero grade: pHter. This was then
> re-interpreted as p-Hter, and the new "suffix" -Hter was added elsewhere to
> make the family words (ma-Hter, bhra-Hter, dhug-Hter, etc). But this theory
> doesn't explain why the accent was moved back.