Cloudy
Lightless
Lightless adjective - Being without light or without much light.
Usage example: wondered what might be lurking in the lightless corners of the basement
Mutual synonyms
Both words in one sentence
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In the Star Trek: The Next Generation episode "Where Silence Has Lease", the Enterprise encounters a void in space (home to a curious Eldritch Abomination) which is apparently pure nothingness, but rather than lightless black, it is mostly a cloudy dark blue.
Source: Purple Is the New Black
Cite this Source
Lightless and Cloudy. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/cloudy/lightless
Cloudy & Lightless. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/cloudy/lightless>.
Lightless or Cloudy. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/cloudy/lightless.
Google Ngram Viewer shows how "cloudy" and "lightless" have occurred on timeline