Thesaurus / lightlessness
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLE SENTENCES FROM THE WEB

The lightlessness is feelingly placed where the chief light should be.
In the lightlessness, and above the wailing of the terrified people about them, they could hear the scuff of running feet.
SECOND SIGHTBASIL EUGENE WELLS

WORDS RELATED TO LIGHTLESSNESS

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.