lightless

Etymology

From Middle English lightles, from Old English lēohtlēas; equivalent to light (noun) + -less (“lacking, without”).

adj

1. Lacking light; unilluminated; dark.
   "I can’t stand much of this," said Hurstwood, whose legs ached him painfully, as he sat down upon the miserable bunk in the small, lightless chamber allotted to him. 1900, Theodore Dreiser, Sister Carrie
   Touch with thy flame the lightless lamp of my sorrow. 1918, Rabindranath Tagore, “Lover’s Gift and Crossing”, in Crossing, New York: Macmillan, 7, p. 85
   Knocked about on the wooden seat of the rackety rickety dim-lit bus, going past silent fields and past houses which were lightless and dead or bright and private, Mr Biswas no longer thought of the afternoon’s mission, but of the night ahead. 1961, V. S. Naipaul, A House for Mr Biswas, Vintage International, published 2001, Part One, Chapter 5