light·​less | \ ˈlīt-ləs How to pronounce lightless (audio) \

Definition of lightless

1 : receiving no light : dark
2 : giving no light

Keep scrolling for more

Examples of lightless in a Sentence

wondered what might be lurking in the lightless corners of the basement
Recent Examples on the Web Its grasses and shrubs are beautifully adapted to survive winters in which their days are completely lightless, because the vegetation lies covered in a layer of snow, surviving mostly underground as roots. Matt Simon, Wired, "The Arctic Is Getting Greener. That's Bad News for All of Us," 18 Feb. 2020 These tiny waves gradually stretched to hundreds of thousands of light years across as the expanding, lightless universe cooled down following the super-hot instant of inflation. Peter Byrne, Quanta Magazine, "A Bold Critic of the Big Bang’s ‘Smoking Gun’," 3 July 2014 The other twisted and whined at the end of a leash that Contreras clutched as the gales threatened to suck the mutt away into the lightless night. Martin Kuz, San Antonio Express-News, "After the hurricane, the storm within," 9 Apr. 2018 More art on the austere lower mezzanine, and on the platforms (another level down), would have enlivened the vast and lightless space. Alexander Nazaryan, Newsweek, "New York's Newest Subway Station: a Gateway to Dubai-on-the-Hudson," 15 Sep. 2015 I was forced to conduct a salvage operation that would take me to the lightless depths of the analog age. Alexander Nazaryan, New York Times, "A Personal Foray Into the Long-Lost Pynchon Tapes," 19 May 2017 Around the set and throughout Fox News’s subterranean Midtown newsroom, a lightless former Sam Goody, staffers watched the display with mixed and fraught emotions.,, "Exclusive: After Ailes’s Shocking Death, Fox News Grieves—and Breathes a Sigh of Relief," 19 May 2017 Black holes will evaporate, matter itself will eventually decay into radiation and the universe will be a cold, lightless, lifeless place for the rest of eternity. Yvette Cendes, Discover Magazine, "When Will It be 'Game Over' For the Universe?," 6 Feb. 2017 In the city, young homeless people can be chameleons blending in with average New Yorkers by the bright lights of Times Square, the lightless halls of stations and terminals, and the pitch dark of alleys. Nikita Stewart, New York Times, "Homeless Young People of New York, Overlooked and Underserved," 5 Feb. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lightless.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of lightless

before the 12th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about lightless

Time Traveler for lightless

Time Traveler

The first known use of lightless was before the 12th century

See more words from the same century

Statistics for lightless

Cite this Entry

“Lightless.” Dictionary, Merriam-Webster, Accessed 29 May. 2020.

More from Merriam-Webster on lightless

Thesaurus: All synonyms and antonyms for lightless

Rhyming Dictionary: Words that rhyme with lightless

Comments on lightless

What made you want to look up lightless? Please tell us where you read or heard it (including the quote, if possible).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!