Enveloped in darkness; dark, obscure. archaic.

Of the night or a part of the night: not illuminated by the sun; characterized by (relative) absence of light. Frequently predicative, with…

Receiving no light; dark.

Dark, gloomy, deficient in light. Of a place.

Dark (literal and figurative); esp. having little or no light; sinful; obscure, difficult to understand.

Full of darkness.

(un-, prefix1 affix 1.)

Full of darkness, dark.

Dark.

Darkened, dark.

gen. Black. Chiefly poetic and rhetorical. Of sky, sea, land, night, and the like.

Not bright; unilluminated; dark.

Of or pertaining to darkness; of dark nature; = tenebrous, adj.

Dark. Cf. blind, adj. 6. Obsolete.

Black as the river Styx; dark or gloomy as the region of the Styx.

Devoid of the light of day; dark.

Not illuminated or lit up.

Growing dark or characterized by darkness; dark; dim, gloomy.

Devoid of any ray of light; dark, gloomy. Also figurative.

Causing or producing darkness; obscuring. (In quot. 1786 loosely for ‘dark, gloomy’.)

without a twink or twinkle.

That is beyond the confines of day.

without a glimmer.

Destitute of a gleam (of light).

Not lit up; unilluminated; not made lighter or brighter. Also: not made lighter in tone or colour. Also figurative.