trygder is the feminine plural indefinite of trygd.

trygdN

Kven

apurahaN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:18959Edit on GitHub Suggest

oadjuN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:38092Edit on GitHub Suggest

Case	Sg	Pl
Indef	trygd	trygder
Def	trygden / trygda	trygdene