"Duskness" is a word in ENGLISH

A dark color inclining to red or yellow, resulting from the mixture of red and black, or of red, black, …

To make brown or dusky.

A species of agalloch, or aloes wood, of a dusky or mottled color, of a light, friable texture, and less …

Somewhat dark; dusky.

Not bright or distinct; wanting luminousness or clearness; obscure in luster or sound; dusky; darkish; obscure; indistinct; overcast; tarnished.

Quality of being dingy; a dusky hue.

Soiled; sullied; of a dark or dusky color; dark brown; dirty.

dulúm - Darkness, blackness, night, gloom, murk, dusk, obscurity, obfuscation, dimness, indistinctness; to darken, become dark, get—dusky,—dim,—obscure,— gloomy, to come …

Tending to darkness or blackness; moderately dark or black; dusky.

In a dusky manner.

The state of being dusky.

Somewhat dusky.

Tending to blackness in color; partially black; dark-colored; not bright; as, a dusky brown.

Intellectually clouded.

Gloomy; sad; melancholy.

Partially dark or obscure; not luminous; dusk; as, a dusky valley.

A cool, refreshing state of the air; duskiness; coolness; shade.

Pertaining to soot; sooty; dark; dusky.

To begin to grow dark; to grow dusky.

Imperfectly illuminated; dismal through obscurity or darkness; dusky; dim; clouded; as, the cavern was gloomy.