un·​de·​tect·​ed | \ ˌən-di-ˈtek-təd , -dē-\

Definition of undetected

: 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

Holmes' non-flamboyant fashion sense has managed to help her keep a low profile in crowded places, like riding the New York City trains completely undetected. Marina Liao, Marie Claire, "Katie Holmes' Chloé​ Ballet Flats Are the Most Versatile Shoes Around," 3 Aug. 2018 Kai will never play competitive basketball again, the previously undetected heart issue that led to his collapse on Feb. 9, 2017, ending a promising career and forcing Keita to play for two people. Bill Landis, cleveland.com, "The driving force behind Keita Bates-Diop's resurgent season as Ohio State's star hits the NCAA Tournament stage," 13 Mar. 2018 Attack submarines are often able to operate closer to enemy targets and coastline undetected, reaching areas typically inaccessible to deeper draft surface ships. Kris Osborn, Fox News, "Navy pursues new stealthy heavyweight attack torpedo," 10 Sep. 2018 Further, concerns have been raised that these firearms could get onto planes because the 3-D guns are not metal and could go undetected. Kurtis Lee, The Seattle Times, "Q&A on 3-D printed guns," 31 July 2018 Without naming the state, Friday’s indictment said the Russian intelligence officers stole information on about 500,000 voters from the website of one board of elections, a breach undetected for three weeks. Geoff Mulvihill, BostonGlobe.com, "No signs Russia targeting elections like 2016, US official says," 14 July 2018 Even worse, the sequences indicated both had been circulating undetected for at least 2 years. Leslie Roberts, Science | AAAS, "Alarming polio outbreak spreads in Congo, threatening global eradication efforts," 2 July 2018 That gives them the capacity to conduct undetected espionage. Derek Hawkins, Washington Post, "The Cybersecurity 202: Google wants to help political groups fight these cheap but disruptive cyberattacks," 17 May 2018 Adding more National Guard troops for intelligence support will serve mainly to stop migrants who are slipping through undetected. NBC News, "National Guard troops headed for border Friday night, officials say," 7 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undetected.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of undetected

circa 1602, in the meaning defined above

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Last Updated

31 Dec 2018

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Time Traveler for undetected

The first known use of undetected was circa 1602

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English Language Learners Definition of undetected

: not noticed by anyone : not detected

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excited commotion or publicity

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