On *wastu-:
> Descriptively, it is a word with only zero-grade
> syllables, a near-impossibility in IE.
Hardly. You can't conclude every completely zeroed
stem in IE is a loanword! What about *suh2nu- "son"?
How can you get more basic that this kinship term?
Loanwords? No way.
> How many other l-stems are there?
Not many unless you connect them with thematic
stems in *-lo-. But people for some reason want
to fight me on that even though we know clearly
that there is a ubiquitous relationship between
athematic and thematic stems throughout IE grammar.
Restricting ourselves to athematic stems, there's
*seh2wl- "sun" and if anyone finds others, I'd really
like to sink my teeth into them.
= gLeN
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