un·​de·​tect·​ed | \ ˌən-di-ˈtek-təd How to pronounce undetected (audio) , -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

Some astrophysical observations hint that sterile neutrinos floating in space could be the undetected dark matter particles that are thought to make up most of the universe's mass. Adrian Cho, Science | AAAS, "Resurrected detector will hunt for some of the strangest particles in the universe," 8 Aug. 2019 Others will eschew asylum and try crossing into America undetected. R. E. | Tegucigalpa, The Economist, "Inside Donald Trump’s migration pact with the Guatemalan president," 27 July 2019 But every day, coyotes, raccoons and other potentially harmful animals cross city streets, mostly undetected. Janet Eastman, oregonlive.com, "What to do about cougars in the neighborhood, skunks under the house, bats in the attic," 19 July 2019 The disease usually spreads when a person unknowingly ingests the virus from food, or drinks, contaminated by small, undetected amounts of stool from an infected person. Cindy Krischer Goodman, sun-sentinel.com, "Watch what you touch, wash your hands, and other things to know about the alarming spread of hepatitis A," 17 July 2019 The woman was pumping gas in her car outside Atlanta last Thursday when a man approached the passenger door undetected, WSB-TV reported. Fox News, "Georgia woman thwarts would-be car thief by soaking him in gasoline: police," 6 July 2019 What's known, researchers say, may be only small parts of much larger operations that remain undetected. Anchorage Daily News, "It’s not just the Russians anymore as Iranians and others turn up disinformation efforts ahead of 2020 vote," 26 July 2019 The capture spotlighted the extent to which drug smugglers will go to remain undetected, building ships designed to barely peak out over the wavetops. Kyle Mizokami, Popular Mechanics, "Watch the Coast Guard Chase Down a Drug-Running Semi-Submersible," 12 July 2019 This randomness, along with Keyes' vanishingly low profile, enabled him to kill undetected for years. Dennis Drabelle, Dallas News, "'American Predator' reveals the chilling playbook of a serial killer," 9 July 2019

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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Statistics for undetected

Last Updated

13 Aug 2019

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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

Comments on undetected

What made you want to look up undetected? Please tell us where you read or heard it (including the quote, if possible).


not constant or steady

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