undecipherable

adjective

un·​de·​ci·​pher·​able ˌən-dē-ˈsī-f(ə-)rə-bəl How to pronounce undecipherable (audio)
Synonyms of undecipherablenext
: unable to be deciphered : not decipherable : indecipherable
undecipherable handwriting
undecipherably
ˌən-dē-ˈsī-f(ə-)rə-blē How to pronounce undecipherable (audio)
adverb

Synonyms

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Examples of undecipherable in a Sentence

undecipherable stone inscriptions that have inspired a wide assortment of theories
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.
Hinton then offered an extremely detailed scientific explanation of why that's the case -- an explanation that would be undecipherable to anyone but an AI creator like himself. — Josh Meyer, USA TODAY, 4 May 2023 When the Giants finally chose Kadarius Toney, a wide receiver from the University of Florida, with the 20th pick in the N.F.L. draft, the team’s fans in Cleveland took a good 10 seconds to start a slow clap, mouthing undecipherable questions beneath their masks. — New York Times, 30 Apr. 2021

Word History

First Known Use

1758, in the meaning defined above

Time Traveler
The first known use of undecipherable was in 1758

Rhymes for undecipherable

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Browse Nearby Words

undecipherability
undecipherable
undeciphered
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Cite this Entry

“Undecipherable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undecipherable. Accessed 23 Apr. 2025.

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