Meanings
Synonyms & antonyms
nounThe state or condition of being lightless; absence of light.
More synonyms by meaning
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From lightless (adjective) + -ness (suffix forming nouns).
Full word history & related roots →Cite this entry
lightlessness. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/lightlessness
“lightlessness.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lightlessness. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “lightlessness,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/lightlessness.
Source: lightlessness on Wiktionary, CC BY-SA 4.0.