From: Piotr Gasiorowski Message: 48977 Date: 2007-06-13
On 2007-06-13 20:31, tgpedersen wrote:
>
>
>> *agr.s, *sakr.s < agros, sakros
>
> Why? Or rather, where else does this rule apply?
The nom.sg ending *-os was syncopated after /r/ (_not_ from rhotacised
*s) if this /r/ was originally preceded by a consonant (as in <sacer>,
cf. OLat. sakros) and in trisyllabic words with a short penult (vesper <
*wesperos, but since:rus) plus, exceptionally, in vir < *wiros).