undetected

adjective

un·​de·​tect·​ed ˌən-di-ˈtek-təd How to pronounce undetected (audio)
-dē-
: not observed, noticed, or detected
an undetected flaw/error
an undetected illness
These rare mistakes are subtle and may go undetected for months and even years.Mario Salvadori

Examples of undetected in a Sentence

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.
The lair goes undetected for six months. Theoden Janes, Charlotte Observer, 10 Oct. 2025 The actual number of incidents, though, is likely higher, as many incidents go undetected. Marni Rose McFall, MSNBC Newsweek, 10 Oct. 2025 The more sabotage missions completed undetected, the greater the prize — but if a celebrity saboteur is caught, the contestant faces a difficult decision. Jesse Whittock, Deadline, 9 Oct. 2025 The more sabotage missions completed undetected, the greater the prize – but if a Celebrity Saboteur is caught, the contestant faces a difficult decision. Leo Barraclough, Variety, 2 Oct. 2025 See All Example Sentences for undetected

Word History

First Known Use

circa 1602, in the meaning defined above

Time Traveler
The first known use of undetected was circa 1602

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Cite this Entry

“Undetected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetected. Accessed 16 Oct. 2025.

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