@Isomorphyc, FWIW, the *smakkuz entry suggests this became Old Dutch smak, matching the closed-syllable pattern of a short vowel, and this then turned into Middle Dutch smake. That -e on the end suggests that the term might be parsed as sma + ke phonologically, making the a now an open syllable.

@Rua, am I parsing that correctly? And is the Descendants list correct as shown in the *smakkuz entry?

‑‑ Eiríkr Útlendi │Tala við mig23:53, 14 December 2017

But then the question is where the extra vowel came from, and why the k was degeminated.

Rua (mew)23:54, 14 December 2017