Lightless

[laitlis]

(adj.) without illumination; 'came up the lightless stairs'; 'the unilluminated side of Mars'; 'through dark unlighted (or unlit) streets' .

(adj.) giving no light; 'lightless stars `visible' only to radio antennae' .

Edited by Leah--From WordNet

(a.) Destitute of light; dark.

Checker: Maryann