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
Those two strong responders saw their HIV drop to undetectable levels, inching up only occasionally when the CAR-T cells presumably got to work again.
—ABC News, 12 May 2026
The reality is that burdensome climate regulations that have an almost undetectable impact on our environment and emissions are crushing small businesses and families with unsustainably high prices.
—Linh Tat, Oc Register, 4 May 2026
The company also covers undetectable preexisting conditions, rust damage and improper installations.
—Sharon Wu, USA Today, 1 May 2026
British officials later announced that the Skripals had apparently been poisoned with Novichok, a group of deadly nerve agents developed by the Soviet Union in the 1970s and ’80s and designed to be especially lethal and largely undetectable.
—Nick Tabor, Encyclopedia Britannica, 29 Apr. 2026
See All Example Sentences for undetectable
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ABC News, 12 May 2026
The reality is that burdensome climate regulations that have an almost undetectable impact on our environment and emissions are crushing small businesses and families with unsustainably high prices.
—Linh Tat, Oc Register, 4 May 2026
The company also covers undetectable preexisting conditions, rust damage and improper installations.
—Sharon Wu, USA Today, 1 May 2026
British officials later announced that the Skripals had apparently been poisoned with Novichok, a group of deadly nerve agents developed by the Soviet Union in the 1970s and ’80s and designed to be especially lethal and largely undetectable.
—Nick Tabor, Encyclopedia Britannica, 29 Apr. 2026
See All Example Sentences for undetectable
Cite this Entry
“Undetectable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetectable. Accessed 17 May. 2026.
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