undetected

adjective
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

My mother was a master of artifice, and her illness went undetected, too. Laura Zera, New York Times, "No One Helped My Mentally Ill Mother, or Me," 22 June 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 long-range, stealthy and precise Mk 48 heavyweight attack torpedo," 25 June 2018 That allows attacks to remain undetected for longer periods of time. Dan Goodin, Ars Technica, "Stymied by browsers, attackers embed Flash 0-day inside MS Office document," 7 June 2018 Amy Joyner-Francis, who had a rare, undetected, heart condition, died of sudden cardiac death, aggravated by physical and emotional stress from the 2016 fight at Howard High School of Technology in Wilmington. Washington Post, "District moves suit in fatal school fight to federal court," 14 Apr. 2018 Those who remain undetected could be anywhere in America, perhaps in a neighborhood near you. Deroy Murdock, National Review, "Border Wall Needed for National Security, Counterterrorism," 31 Jan. 2018 What Google struggles in, however, is discovering apps that perform covert tasks over a period of time in order to remain undetected instead of immediately engaging in fraud or other nefarious activities. Jonathan Vanian, Fortune, "Why Downloading Flashlight Apps From Google Play May Be a Bad Idea," 5 Jan. 2018 Without naming the state, Friday's indictment says the Russian intelligence officers stole information on about 500,000 voters from the website of one board of elections, a breach that went undetected for three weeks. CBS News, "Top state election officials meet amid security concerns," 14 July 2018 Infarcts can lead to strokes, but many go undetected. Alice Park, Time, "This Surprising Factor May Raise Your Risk of Alzheimer’s," 11 July 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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The first known use of undetected was circa 1602

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