un·​de·​tect·​able | \ˌən-di-ˈtek-tə-bəl, -dē-\

Definition of undetectable 

: unable to be detected : impossible to discover or notice : not detectable an almost undetectable change undetectable traces of poison Signs of life may be so minimal as to be undetectable by modern instruments …— Lauren J. Livo

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Other Words from undetectable

undetectably \ˌən-​di-​ˈtek-​tə-​blē, -​dē-​ \ adverb
an undetectably small change

Examples of undetectable in a Sentence

Recent Examples on the Web

The trouble is that much of the trail of Anna Harvey’s influence is undetectable. Sarah Mower, Vogue, "Remembering Anna Harvey, the Vogue Editor Who Dressed Princess Diana and Translated the Magazine’s Style Across the World," 15 Oct. 2018 People have been making guns at home for personal use for ages, plastic (not undetectable, still uses metal) or not. Adam Shaw, Fox News, "Dems lash out at Trump over 3D gun decision, call settlement a 'death warrant'," 31 July 2018 These greens also give your smoothie more body, but the flavor from the small serving is virtually undetectable when paired with fruit. Samantha Cassetty, NBC News, "How to build a better smoothie, according to a nutritionist," 26 May 2018 The nerve agents were designed to be undetectable, possibly relying on combinations of otherwise harmless or unsuspicious chemicals. Beth Mole, Ars Technica, "Second Novichok poisoning in Britain raises alarm, questions over contamination," 5 July 2018 Credit card skimmers are small, electronic devices that criminals can install inside the card reader at a gas pump and are undetectable to consumers. Brittany Shoot, Fortune, "Beware Credit Card Skimmers at Gas Stations This July Fourth, Secret Service Warns," 3 July 2018 The gay men’s social network Hornet has long allowed users to indicate their HIV status in their profiles, choosing from five options: negative, negative on PrEP (the pill to prevent HIV), positive, positive undetectable, and don’t know. Julia Belluz, Vox, "Grindr is revealing its users’ HIV status to third-party companies," 2 Apr. 2018 But many women are also advised to have chemo to kill undetectable cancer cells that may have escaped the breast tumor. Marie Mccullough, Philly.com, "What the latest news on breast cancer, chemo and genomic testing could mean for you," 5 June 2018 Of course, an incurable chronic illness of unknown origin that ravages the sufferer while remaining suspect and all but undetectable to those around her has the hallmarks of horror. Lidija Haas, The New Yorker, "Memoirs of Disease and Disbelief," 17 June 2014

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undetectable.' 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 undetectable

1863, in the meaning defined above

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Last Updated

18 Nov 2018

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The first known use of undetectable was in 1863

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a nest or breeding place

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