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.
This reduces the need for noisy scans and increases the chances of a successful, undetected breach. Gunter Ollmann, Forbes.com, 15 July 2025 Paul cited the results of several investigations, including the one conducted by his committee, which found that the gunman was seen more than 90 minutes before the shooting and operated a drone, undetected, hours earlier. Emily Mae Czachor july 13, CBS News, 13 July 2025 But then these final two episodes introduced a surprising villain, someone who can actually lie to Charlie and go undetected, who sets up this ending of Charlie being a fugitive again. Jackie Strause, HollywoodReporter, 11 July 2025 Universities have reported a sharp rise in disciplinary cases tied to AI, but many incidents likely go undetected. Kurt Knutsson, FOXNews.com, 4 July 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

Browse Nearby Words

Cite this Entry

“Undetected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetected. Accessed 20 Jul. 2025.

More from Merriam-Webster on undetected

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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