Gloaming
Etymology
From Old English "glōmung," related to "glōm" ("twilight") and to "glōwan" ("to glow"). It survived especially in Scots and Northern English and carries the sense of light that glows as it dims rather than simply going out.
noun · /GLOH-ming/
The soft, fading light of dusk; twilight.
What it names
A hushed, lyrical word for the interval between sunset and dark — reach for it when “evening” is too flat and you want the specific mood of failing light.
Example
They lingered on the porch into the gloaming, talking until they could no longer see each other’s faces.
Related idea
Where crepuscular is the technical adjective for creatures active at twilight, gloaming is the noun for the twilight itself — the hour, not the habit.