dark
noun
absence of light or illumination
SynonymsdarknessOppositeslightabsence of moral or spiritual values
“the powers of darkness”
an unilluminated area
“he moved off into the darkness”
the time after sunset and before sunrise while it is dark outside
an unenlightened state
“he was in the dark concerning their intentions”
“his lectures dispelled the darkness”
Synonymsdarkness
adjective
devoid of or deficient in light or brightness; shadowed or black
“sitting in a dark corner”
“a dark day”
Oppositeslight(used of color) having a dark hue
“dark green”
“dark glasses”
Oppositeslightbrunet (used of hair or skin or eyes)
“dark eyes”
stemming from evil characteristics or forces; wicked or dishonorable
“black deeds”
“a black lie”
secret
“keep it dark”
showing a brooding ill humor
“a dark scowl”
“the proverbially dour New England Puritan”
lacking enlightenment or knowledge or culture
“this benighted country”
“benighted ages of barbarism and superstition”
Synonymsbenightedmarked by difficulty of style or expression
“much that was dark is now quite clear to me”
“those who do not appreciate Kafka's work say his style is obscure”
Synonymsobscurecausing dejection
“a blue day”
“the dark days of the war”
not giving performances; closed
“the theater is dark on Mondays”
Source: WordNet 3.1, Princeton University