Gibt es im Nordfriesischen ein aus dem Dänischen entlehntes k-Suffix zur Bildung von Adjektivabstrakta?

In this paper I challenge the claim by Hofmann (1956) that the k-suffix in North Frisian abstract deadjectival nouns like f.-a. waremk ‘warmth’ is adopted from Danish. Danish loanwords like f.-a. eemk ‘grief’ are rather derived from deadjectival verbs containing a k-suffix than from adjectives originally. In other examples – waremk being a case in point – the k-suffix has developed from the suffix -d(e)/-t(e) that entered North Frisian from Low German. On the basis of such forms a semi-productive k-suffix, possibly a suffix variant of -d(e)/-t(e), arose in North Frisian, particularly in combination with adjectival base words ending in -r.