Related formslight·less·ness, noun
Examples from the Web for lightless
One survivor told of being thrown into a lightless cave for six months.
If Bales's guilt is true, his soul must surely be a dark, lightless place.Michael Ware on Staff Sgt. Robert Bales, Accused of Killing Afghan Civilians|Michael Ware|March 20, 2012|DAILY BEAST
It seemed to him that he had come up to earth from out of some lightless, subterranean cavern.The Goose Man|Jacob Wassermann
Numberless effects, apparently anomalous, might be adduced in illustration of the action of these lightless rays.Fragments of science, V. 1-2|John Tyndall
The world of Lewis Stillman was damp and lightless; it was narrow and its cold stone walls pressed in upon him as he moved.Small World|William F. Nolan
The Cedars stood before us as yet lightless against the northern sky.In the Valley|Harold Frederic
The protecting glare of day must be unbearable to this monster from the lightless depths, and daylight was vanishing.