Talskubilos wrote: ↑Mon Aug 30, 2021 10:37 am
A good example would be
*prt-u- 'passage, way' (Latin
portus, Germanic
*furθ. Celtic
*φritu- corresponding to
*bhrodh-o- (Slavic) ~
*bhred- 'to wade, to jump' (Balto-Slavic, Albanian).
I see. That is the kind of "deep reconstruction" I've seen elsewhere on the net where all labials (dental, velar) can stand in for any other labial (dental, velar) etc. As this kind of thing is basically not falsifiable, I find it rather useless.
As for the concrete example you're citing - the etymon behind
portus etc, is a verbal noun in
-tu- noun produced in accordance with well-known rules from the root *per-; that root is also attested in Slavic and Albanian, in those languages, just that specific noun is not attested. But the noun is attested widely enough (there's also Avestan
pərətu- ‘bridge’) that it can be safely assumed not to be just a North-Western regionalism, but reconstructed for PIE.
*bhred- seems limited to Balto-Slavic and Albanian, although there are place names in Continental Celtic and Thracian that may contain the root*). But you're basically comparing a derived noun with a root.
*) Based on the limited distribution,
*bhredh- would even be a plausible candidate for a substrate word. OTOH, it may as well be a root-extension of a simpler root; there are several roots of the type *bher-C- that have to do with movement.