underdelen is the masculine singular definite of underdel.

underdelN

Kven

alaosaN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:18164Edit on GitHub Suggest

vuollebealliN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:99785Edit on GitHub Suggest

Case	Sg	Pl
Indef	underdel	underdeler
Def	underdelen	underdelene