godan verb (-mu), intransitive verb
to grow dark slowly; to linger in twilight
Describes the gradual darkening of the evening sky, often with a poetic or literary feel. Implies a slow, lingering transition from dusk to night.
夕暮れが暮れなずむ街を歩いた。
I walked through the town as twilight slowly deepened.
秋の日は暮れなずんで、なかなか暗くならない。
In autumn, the day lingers in twilight and doesn't get dark easily.