Dull or deeper in hue; not bright or light.
Off the air; not transmitting.
Ambiguously or unclearly expressed: enigmatic, esoteric, mysterious, obscure, undefined.
Without moral or spiritual light; sinister, malign.
With emphasis placed on the unpleasant aspects of life; said of a work of fiction, a work of nonfiction presented in narrative form, or a portion of either.
Deprived of sight; blind.
Transmitting, reflecting, or receiving inadequate light to render timely discernment or comprehension: caliginous, darkling, dim, gloomy, lightless, sombre.
Having racing capability not widely known.
Marked by or conducted with secrecy: hidden, secret; clandestine, surreptitious.
Conducive to hopelessness; depressing or bleak.
Lacking progress in science or the arts.
Extinguished.
Having an absolute or (more often) relative lack of light.
Extremely sad, depressing, or somber, typically due to, or marked by, a tragic or undesirable event.
A complete or (more often) partial absence of light.
Ignorance.
Nightfall.
A dark shade or dark passage in a painting, engraving, etc.
To remain in the dark, lurk, lie hidden or concealed.
To make dark, darken; to obscure.
To grow or become dark, darken.
Not noticed.