dark

IPA: dˈɑrk

Having an absolute or (more often) relative lack of light.
(of a source of light) Extinguished.
Deprived of sight; blind.
Transmitting, reflecting, or receiving inadequate light to render timely discernment or comprehension: caliginous, darkling, dim, gloomy, lightless, sombre.
(of colour) Dull or deeper in hue; not bright or light.
Ambiguously or unclearly expressed: enigmatic, esoteric, mysterious, obscure, undefined.
Marked by or conducted with secrecy: hidden, secret; clandestine, surreptitious.
(gambling, of race horses) Having racing capability not widely known.
Without moral or spiritual light; sinister, malevolent, malign.
Conducive to hopelessness; depressing or bleak.
(of a time period) Lacking progress in science or the arts.
The dark ages began after the collapse of the Roman Empire.
The Greek Dark Ages began after the Bronze Age collapse.
1668, John Denham, The Progress of Learning:
Extremely sad, depressing, or somber, typically due to, or marked by, a tragic or undesirable event.
With emphasis placed on the unpleasant and macabre aspects of life; said of a work of fiction, a work of nonfiction presented in narrative form, or a portion of either.
(broadcasting, of a television station) Off the air; not transmitting.

Examples of "dark" in Sentences

Dusk is the beginning of darkness in the evening.
The black sun is the ultimate power of the dark element.
The dark of the night makes faraway voices quite nearer.
The long dark night is waiting to gobble each piece of me.
The hair of the Lion tailed Macaque is dark brown or black.
Being in someone else's prop wash in the dark of night was frightful.
It finally manages to catch a small carnivore in the dark of the night.
The fruit is a legume, while the seed is oblong and dark to black in color.
Their house is filthy and constantly in the dark, with the bulbs painted black.
The night is starless, with a darkness so enveloping that it seems to possess palpability.