lambency

noun lambency

• dark — When it is dark, there is not enough light to see properly, for example because it is night.
• dullness — not sharp; blunt: a dull knife.
• dimness — not bright; obscure from lack of light or emitted light: a dim room; a dim flashlight.
• sundown — sunset, especially the time of sunset.
• sunset — the setting or descent of the sun below the horizon in the evening.