Richard Wordingham wrote:
>
> We've already told most of the story, albeit over two posts. To
> recapitulate:
>
> 1. At some stage (before Plautus), Latin words were stressed on
> their _first_ syllable.
>
> Richard.
so, if I understand you right, this is just a matter of stress here and it
could appear just in compositum, thus this is why we have no "sulsus" or
"sulto" but one has "insulto/resulto" and "insulsus" for "salsus" and
"salto".
For these who are pretty wondering why it should be so important to me: -
the matter is important for me for understanding in which conditions is
posible to have an "o/u" from "a" because of the explanation of the
macro-hydronimy in Dacia which presents the same change of recorded "a" to
"u" ( see Maris > Muresh, Alutas > Olt, Samos > Somesh, Dan(ubius) >
Dun(area). The Slavic influence here is excluded since the Slavs did not
changed the "a" in "o" in the hydronimy (see Sava for instance).
Alex