tristhetene is the feminine plural definite of tristhet.

tristhetN

Kven

1ikävyysN

2alakuloisuusN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:27713Edit on GitHub Suggest

Case	Sg	Pl
Indef	tristhet	tristheter
Def	tristheten / tristheta	tristhetene