sightless

adjective

sight·​less ˈsīt-ləs How to pronounce sightless (audio)
Synonyms of sightlessnext
1
: lacking sight : blind
2
: invisible sense 1
sightlessly adverb
sightlessness noun

Synonyms

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Examples of sightless in a Sentence

bats are often thought to be completely sightless, but this is not really true
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By hooking up the brains of blind rats to compasses, scientists in Japan found the sightless rodents could navigate a maze nearly as well as normally sighted rats. — IEEE Spectrum, 2 Apr. 2015 That makes for quick, sightless control of both radio volume and climate temperature. — Gordon G. Chang, Newsweek, 11 Dec. 2024

Word History

First Known Use

13th century, in the meaning defined at sense 1

Time Traveler
The first known use of sightless was in the 13th century

Rhymes for sightless

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sightless
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Cite this Entry

“Sightless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sightless. Accessed 11 Mar. 2025.

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Kids Definition

sightless

adjective
sight·​less ˈsīt-ləs How to pronounce sightless (audio)
: lacking sight : blind
sightlessness noun

Medical Definition

sightless

adjective
sight·​less ˈsīt-ləs How to pronounce sightless (audio)
: lacking sight : blind sense 1
sightlessness noun

More from Merriam-Webster on sightless

Nglish: Translation of sightless for Spanish Speakers

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