From: Tavi
Message: 71035
Date: 2013-03-05
>Taht's right.
> > Gamkrelidze-Ivanov and Nikolayev agree in deriving vitrum from *k´wei-t- 'light, white' (cfr. Lithuanian s^vìtra- 'sandpaper'), with *k´w- > Latin w- as in *k´wep- > vapor.
> >
>
> That's not kYw- but kw- (kvapas = breath/odor Lith; etc.),
>
> and neither would be a regular change.There're many "irregular" (with regard to std model) sound changes in Latin.
>
> (showing it's Italic), and either dhr > tr or something odd in trahere, among some that are unclear.Latin trahere, as well as pinguis, would be rare instances of Grassmann's Law (although I don't support the reconstruction of "voiced aspirated").
>
> > On the other hand, Germanic *waizda- and Greek isátis 'goad (Isatis tinctoria)' would be derived from the same root with different suffixes.In these languages, 'goad' is likely a Wanderwort.
> >
> I don't mind if it's not a regular change in L; but if you say rel. to s^vìtra-, what causes what's obv. not the reg. outcome in Germanic and Greek? That looks like good ev. AGAINST s^vìtra- : vitro- , even if 'woad' is primary (or 2 words happen to come to sound the same, let alone if from 2 orig. roots *wed- and *wis-).
>