The complete (or partial) absence of light is darkness. If you've ever lost power in your house during a nighttime storm, you know what it's like to be suddenly engulfed in darkness.

There are degrees of darkness, from the complete darkness of the woods on a moonless night to the darkness of a room lit by candlelight. Darkness is open to interpretation, since it's defined as a lack of light. There's also a figurative darkness, which can represent wickedness, sadness, ignorance, or simply mystery: "The details of their adventures would remain in darkness, unless one of them wrote a book someday."

Definitions of darkness
  1. noun
    absence of light or illumination
    synonyms: dark
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    light, lighting
    having abundant light or illumination
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    black, blackness, lightlessness, pitch blackness, total darkness
    total absence of light
    blackout, brownout, dimout
    darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
    partial darkness
    cloudiness, overcast
    gloomy semidarkness caused by cloud cover
    shade, shadiness, shadowiness
    relative darkness caused by light rays being intercepted by an opaque body
    dimness, duskiness
    the state of being poorly illuminated
    gloom, somberness, sombreness
    a state of partial or total darkness
    obscureness, obscurity
    the state of being indistinct or indefinite for lack of adequate illumination
    type of:
    the degree of visibility of your environment
  2. noun
    an unilluminated area
    “he moved off into the darkness
    synonyms: dark, shadow
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    type of:
    the place where some action occurs
  3. noun
    an unenlightened state
    “his lectures dispelled the darkness
    synonyms: dark
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    type of:
    a lack of understanding
  4. noun
    absence of moral or spiritual values
    “the powers of darkness
    synonyms: dark, iniquity, wickedness
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    disgusting wickedness and immorality
    type of:
    condition, status
    a state at a particular time
  5. noun
    having a dark or somber color
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    having a light color
    type of:
    relative darkness or lightness of a color
  6. noun
    a swarthy complexion
    synonyms: duskiness, swarthiness
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    type of:
    complexion, skin color, skin colour
    the coloring of a person's face
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