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On 10/30/10 7:08 AM, Roman Rausch wrote:
> What are the typical diachronic changes of liquid consonants?
> I noticed a vocalization of a palatalized [l] to [j], as Italian _piazza_
> from L. _platea_ and of a velarized [l] to [w] in Slavic, as Polish _Paweł_
> /'pavew/. Also in Polish, it seems that palatalized [r] becomes [Z`], a
> retroflex fricative, spelled _rz_ (correct me, if wrong).
> I guess both [r]>  [l] and [l]>  [r] are quite possible developments (the
> latter in Sanskrit?).

There's also the shift of final [l] to [w] in Portuguese.  I'm not sure 
but this could only be a feature of the Brazilian dialects.

> Is there anything else? Does reverse rhotacism [r]>  [s] appear? Or
> something like [r]>  alveolar flap>  [d]?
> It somehow seems to me that liquids are among the most stable consonants, so
> when creating a language family, one is a bit stuck with them if they appear
> in the proto-language.

Another feature is of Portuguese is the initial rhotic becoming [h].