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.
Matty is able to retrieve the wallet from Olympia’s office mostly undetected. Noel Murray, Vulture, 27 Feb. 2025 Leading the mob’s operations in Holland are brother and sister Sloane (Murphy) and Farrell (Gleeson), who enlist Tobias’ and Marco’s services to hack into the security system of Rotterdam harbour, Europe’s largest shipping port, to secure undetected deliveries of drug shipments. Jesse Whittock, Deadline, 26 Feb. 2025 The findings mean the virus may be spreading undetected. Nicole Fallert, USA TODAY, 14 Feb. 2025 Breaches often go undetected for extended periods due to inadequate monitoring tools and processes. Dan Sorensen, Forbes, 4 Mar. 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 1 Apr. 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!