Why would a 'k' get lost in sollen? I see no regular way. An influence of "Sold" is the only option that I see, and not the other way around (as is said for Söldner, see Sold).

One source for this is Kroonen, Guus (2013) Etymological Dictionary of Proto-Germanic. The reconstructed PIE term *skel- has only a single descendant, since the Lithuanian (Balto-Slavic) term could be a loan from Germanic, thus reconstruction should be impossible. However, *skel- overlaps with *(s)kel- (the brackets indicate an s-mobile, that appears and disappears unpredictably), which overlaps semantically with *(s)ker- *(s)kelH-. The H indicates difficulty in reconstructing a specific *h_ (a laryngeal), so it's less than reasonable. The descendants are rather divergent in meaning, so the gloss "to cut; to split, separate" is just to be seen as a placeholder, but it already reminds a bit of "taking a cut", "to share". After all, the question for "sollen" is motivated by the Schulz (also Schultheiß etc), which is supposed to be cognate with sollen (and shall), and Schulden "debt, guilt", and denotes a title or function of an authority. Then a look at one item listed as descendant of *(s)kelH-, Icelandic skil shows a sense "boundary", which does remind of the origin of fine, fee, that is the border where a fine is taken (cp. finito). But the word also means understand. On the one hand this does remind me of "unterstützen" (support, cp. donation). On the other hand to cut and to decide, Ger. entscheiden are considerable, too.

Anyhow, I'm not doubting the PGem root, just the derivation of sollen.

The normal development of *sk- is to sch. Are there other such cases of lost 'k' or morphed 'sh'?

  • Very interesting observation. My Kluge dictionary also just says: "Der neuhochdeutsche Anlaut beruht auf einer (wohl im Satztiefton erfolgten) Konsonantenvereinfachung (die teilweise auch im Englischen erfolgt ist)". Commented Feb 4, 2019 at 10:05
  • What about Sklaven vs. Slaven? (This of course is a bit of a mine field because there is decades of debate over the origin of the word slaves (and whether there is a genuine relation to Lat. sclavi) Commented Feb 6, 2019 at 13:41
  • Pfeifer calls this "Konsonantenerleichterung" dwds.de/wb/sollen#et-1
    – Jonathan Herrera
    Commented Feb 19, 2019 at 10:43

1 Answer 1


Grimm's dictionary treats this topic very in detail (see [1]). The word developed regionally (and there in turn also chronologically) very differently and subjected to the particular influences. Very shortly explained, sk... developed to sc... or sch... and further to sa... and so..., in which they partially remark some doubts. A few dialects still use sch... nowadays.

Grimms Wörterbuch behandelt dieses Thema sehr ausführlich (siehe [1]). Das Wort hat sich regional (und dort wiederum auch zeitlich) höchst unterschiedlich entwickelt und unterlag den jeweiligen Einflüssen. Ganz kurz erklärt hat sich das sk... zu sc... bzw. sch... und weiter zu sa... und so... entwickelt, wobei bei einigen Ableitungen Zweifel geäußert werden. Einige Mundarten verwenden heute noch sch...

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