frostsprengninger is the feminine plural indefinite of frostsprengning.

frostsprengningN

North Sámi

čáhkkanN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:83052Edit on GitHub Suggest

Case	Sg	Pl
Indef	frostsprengning	frostsprengninger
Def	frostsprengningen / frostsprengninga	frostsprengningene