What does dark mean?
Dark describes the absence or near-absence of light, and by extension anything deep in shade or approaching black in color. Beyond the literal, it carries rich figurative weight: a dark mood is gloomy, dark humor finds comedy in grim subjects, and a dark chapter of history is one marked by suffering or secrecy. The word also appears in fixed idioms such as "in the dark" (uninformed) and "a dark horse" (an unexpected contender). Functioning primarily as an adjective, it also serves as a noun — "after dark" meaning nightfall — and occasionally as an adverb, as in "playing it dark." Derived forms like darken, darkness, and darkly extend its reach through the language. With roots stretching back to Old English "deorc," dark is one of those rare everyday words whose literal and metaphorical uses have both remained vital for more than a millennium, making it indispensable for describing both what we see and what we feel.
Having little or no light; or of a color or complexion, deep in shade and tending toward black.
"The cellar was pitch-dark and smelled of damp earth."
The absence of light; darkness, especially as encountered at nightfall.
"We hiked back down the mountain before dark."
Usually used in phrases such as "before dark," "after dark," or "in the dark."
In a dark manner; used informally after certain verbs or adjectives.
"The threat still loomed dark over the negotiations."
Rare and largely literary; far less common than the adjective.
As a noun, "dark" rarely takes a plural; "darks" appears chiefly in specialized contexts such as laundry sorting (dark-colored garments) or photography.
"Separate the lights from the darks before you start the wash."
"Dark" first recorded in Old English as "deorc" — and its mysterious cousins include not just Germanic languages but possibly Latin "obscurus," making it a word that has meant "hard to see" for well over a thousand years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dark
Dark descends from the Old English "deorc," meaning without light or gloomy, and belongs to the Germanic family of words for obscurity. It is related to Old Saxon "dark" and Old High German "tarchannen"-forms, with possible wider connections debated by scholars. The word has been in continuous use since before the Norman Conquest, and its figurative senses developed early in Middle English.
Related word forms
How dark is actually used
"Dark" functions chiefly as an adjective but also serves as a noun (e.g., "after dark") and, less commonly, an adverb. Its figurative senses — a "dark mood," "dark humor" — are standard rather than slangy, though tone can lean negative. In British usage "it's getting dark" and similar phrasing is universal; no significant regional restriction applies.
Easily confused with dark
Dusk refers specifically to the period of fading light at the end of the day, whereas dark describes the general state of little or no light.