Ilk. initial [s] was lost before consonants; [sC-] > [øC-]
This rule is described on the Comparative Tables along with the unvoicing effects of the initial [s] (PE19/20-21), but in The Etymologies the only examples are [st-] > [θ-] (see below).
Order (02500)
| After | 02300 | initial [s] unvoiced following [l], [r], [w] | ᴹ✶sl- > Ilk. lh- | PE19/21 |
| After | 02400 | initial [s] spirantalized following voiceless stops | ᴹ✶stalrā > Ilk. thall | Ety/STAL |
Phonetic Rule Elements
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> |
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✧ PE19/21 (sm- > m-); PE19/21 (sn- > n-) |