undetected
adjective
un·de·tect·ed
ˌən-di-ˈtek-təd 
-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
Mario SalvadoriExamples of undetected in a Sentence
Recent Examples on the Web
These adversaries often breach networks and remain undetected for months, slowly harvesting data or laying the groundwork for more damaging attacks.
—Bhupendra Singh, Forbes.com, 1 July 2025
This misallocation went undetected for at least two years and was only flagged during the 2025–26 budget planning cycle.
—Windi Eklund, Oc Register, 17 June 2025
This secret geometry of wave functions went undetected for decades.
—Shalma Wegsman, Quanta Magazine, 6 June 2025
LexisNexis breach went undetected for months after holiday hack
LexisNexis filed a notice with the Maine attorney general revealing that a hacker accessed consumer data through a third-party software development platform.
—Kurt Knutsson, FOXNews.com, 5 June 2025
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Bhupendra Singh, Forbes.com, 1 July 2025
This misallocation went undetected for at least two years and was only flagged during the 2025–26 budget planning cycle.
—Windi Eklund, Oc Register, 17 June 2025
This secret geometry of wave functions went undetected for decades.
—Shalma Wegsman, Quanta Magazine, 6 June 2025
LexisNexis breach went undetected for months after holiday hack
LexisNexis filed a notice with the Maine attorney general revealing that a hacker accessed consumer data through a third-party software development platform.
—Kurt Knutsson, FOXNews.com, 5 June 2025
See All Example Sentences for undetected
Cite this Entry
“Undetected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetected. Accessed 10 Jul. 2025.
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