undetectable
adjective
un·de·tect·able
ˌən-di-ˈtek-tə-bəl 
-dē-
: 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
Lauren J. LivoExamples of undetectable in a Sentence
Recent Examples on the Web
The chemical is virtually undetectable in a brewed cup of decaf coffee, which is roasted at high temperatures after being decaffeinated.
—Nicholas Florko, STAT, 28 Mar. 2024
The medication reduces the viral load in a patient's body making the virus virtually undetectable and, therefore, untransmissible.
—Mary Kekatos, ABC News, 16 Nov. 2023
Filters have gone from just okay — obviously fake lashes that glitch with each movement, blindingly-white eyeballs, skin smoothed and contoured to a superficial, mannequin-like texture — to virtually undetectable.
—Kirbie Johnson, Allure, 27 Oct. 2023
Those levels tapered off and are undetectable now, based on recent testing, but the chemicals were still detectable in Sulphur Run through March 2023.
—Brenda Goodman, CNN, 9 Mar. 2024
The gold mineralization is strongly positively associated with Cu, As, Ag, Bi, W and K, while Mo, Sb and Ca anomalies are as haloes distal to the gold, Hg is usually undetectable, Pb and Zn are mainly distal, and Ba has a wide distribution.
—Fort Worth Star-Telegram, 7 Mar. 2024
Had some official communiqué been issued, at a frequency undetectable to those older than 25?
—Callie Holtermann Molly Matalon, New York Times, 24 Feb. 2024
YouTubers, TikTokers and influencers with millions of followers and faces undetectable to the middle-age eye.
—Lina Abascal, Los Angeles Times, 25 Oct. 2023
Fluorescent organisms contain chemicals that absorb short-wavelength ultraviolet light—which is undetectable to human eyes—and emit longer wavelength, visible light that appears as a colorful glow.
—Will Sullivan, Smithsonian Magazine, 10 Oct. 2023
Nicholas Florko, STAT, 28 Mar. 2024
The medication reduces the viral load in a patient's body making the virus virtually undetectable and, therefore, untransmissible.
—Mary Kekatos, ABC News, 16 Nov. 2023
Filters have gone from just okay — obviously fake lashes that glitch with each movement, blindingly-white eyeballs, skin smoothed and contoured to a superficial, mannequin-like texture — to virtually undetectable.
—Kirbie Johnson, Allure, 27 Oct. 2023
Those levels tapered off and are undetectable now, based on recent testing, but the chemicals were still detectable in Sulphur Run through March 2023.
—Brenda Goodman, CNN, 9 Mar. 2024
The gold mineralization is strongly positively associated with Cu, As, Ag, Bi, W and K, while Mo, Sb and Ca anomalies are as haloes distal to the gold, Hg is usually undetectable, Pb and Zn are mainly distal, and Ba has a wide distribution.
—Fort Worth Star-Telegram, 7 Mar. 2024
Had some official communiqué been issued, at a frequency undetectable to those older than 25?
—Callie Holtermann Molly Matalon, New York Times, 24 Feb. 2024
YouTubers, TikTokers and influencers with millions of followers and faces undetectable to the middle-age eye.
—Lina Abascal, Los Angeles Times, 25 Oct. 2023
Fluorescent organisms contain chemicals that absorb short-wavelength ultraviolet light—which is undetectable to human eyes—and emit longer wavelength, visible light that appears as a colorful glow.
—Will Sullivan, Smithsonian Magazine, 10 Oct. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'undetectable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near undetectable
Cite this Entry
“Undetectable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetectable. Accessed 19 Apr. 2024.
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