unguessable

adjective

un·​guess·​able ˌən-ˈge-sə-bəl How to pronounce unguessable (audio)
: impossible to guess
an unguessable outcome

Examples of unguessable in a Sentence

Recent Examples on the Web
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Another option is to use an online password generator to create something virtually unguessable. Kim Komando, USA TODAY, 27 Oct. 2022 Use different, totally unguessable passwords for every website, without repeating them or writing them down. Andy Greenberg, Wired, 21 Aug. 2020 Vingcard's system encodes a unique cryptographic key into each keycard—and another into every hotel's master keys—that are all designed to be unguessable. Andy Greenberg, WIRED, 25 Apr. 2018

Word History

First Known Use

1832, in the meaning defined above

Time Traveler
The first known use of unguessable was in 1832

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Cite this Entry

“Unguessable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unguessable. Accessed 6 Jul. 2026.

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