From Wiktionary, the free dictionary
From duga (“to suffice; to be useful”).
dugur m (genitive singular dugs, no plural)
- energy, drive, vigour
- Synonyms: dugnaður, atorka, kraftur
Declension of dugur (sg-only masculine)
- duglaus (“weak, inactive”)
- duglegur (“diligent, energetic, hard-working”)
- dugleysi (“weakness, incapacity, inactivity”)