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(ˈlaɪt lɪs)

1. without light or lights; dark.
2. giving no light.
[before 1000]
light′less•ness, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.lightless - giving no light; "lightless stars `visible' only to radio antennae"
invisible, unseeable - impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending"
2.lightless - without illuminationlightless - without illumination; "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"
dark - devoid of or deficient in light or brightness; shadowed or black; "sitting in a dark corner"; "a dark day"; "dark shadows"; "dark as the inside of a black cat"


adjdunkel, lichtlos
References in classic literature ?
The south-westerly mood of the great West Wind is a lightless mood, without sun, moon, or stars, with no gleam of light but the phosphorescent flashes of the great sheets of foam that, boiling up on each side of the ship, fling bluish gleams upon her dark and narrow hull, rolling as she runs, chased by enormous seas, distracted in the tumult.
With the red light shut off and soaring like an immense shadow on the crest of a wave she was lost to view in one great, forward swing, melting into the lightless space.
After all, that was only a savage sight, while I seemed at one bound to have been transported into some lightless region of subtle horrors, where pure, uncomplicated savagery was a positive relief, being something that had a right to exist--obviously--in the sunshine.
He had come out of a highly hygienic prison round like a tub, with an enormous stomach and distended cheeks of a pale, semi-transparent complexion, as though for fifteen years the servants of an outraged society had made a point of stuffing him with fattening foods in a damp and lightless cellar.
The night, clear and starry, sparkled darkly, and the opaque, lightless patches shift- ing slowly against the low stars were the drifting islets.
From the invisible world of meiofauna living in the sands of our beaches to a cephalopod called the 'Vampire Squid from Hell' stalking the lightless depths, Hird takes us on an astonishing journey as he follows the tides and currents from shoreline to the bone-crushing pressure of the deep sea.
It was complete out of character how a Cuban warrior, weaned in the dire training system down in a dungeon off a lightless alley in Havana, would produce a cowardly result, with the whole world watching.
Tom Iliffe, a professor in the Marine Biology Department at TAMUG who has been studying the biodiversity, evolution and conservation of marine cave animals for nearly 40 years, remarks, Providing a model for the basic function of this globally-distributed ecosystem is an important contribution to coastal groundwater ecology and establishes a baseline for evaluating how sea level rise, seaside touristic development and other stressors will impact the viability of these lightless, food-poor systems.
Similarly, Bush stated on September 17th: "We will not allow ourselves to be terrorized by somebody who thinks they can hit and hide in some cave somewhere," (40) a stratagem eerily reflected in the dark-seekers' hunt for Neville before returning to hide in the lightless, urban caves of Manhattan's ruined buildings.
I'd become like her house when she left and the door closed behind her forever--seasons wearing down paint and siding, rain gutters split and hanging down across windows lightless and without movement.