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
Her tumors have stabilized, and some are nearly undetectable.
—Wendy Grossman Kantor, PEOPLE, 23 Oct. 2025
In a paper in the journal Physical Review Letters, the team explains how this is down to typically undetectable thermal fluctuations.
—Chris Young, Interesting Engineering, 20 Oct. 2025
Perhaps the sweater still had the scent of the animal shelter lingering on it, undetectable by humans.
—Liz O'Connell, MSNBC Newsweek, 17 Oct. 2025
Compared with testing from 15 years ago, average lead levels were higher, and fewer products had undetectable lead.
—Rob Williams, EverydayHealth.com, 17 Oct. 2025
See All Example Sentences for undetectable
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Wendy Grossman Kantor, PEOPLE, 23 Oct. 2025
In a paper in the journal Physical Review Letters, the team explains how this is down to typically undetectable thermal fluctuations.
—Chris Young, Interesting Engineering, 20 Oct. 2025
Perhaps the sweater still had the scent of the animal shelter lingering on it, undetectable by humans.
—Liz O'Connell, MSNBC Newsweek, 17 Oct. 2025
Compared with testing from 15 years ago, average lead levels were higher, and fewer products had undetectable lead.
—Rob Williams, EverydayHealth.com, 17 Oct. 2025
See All Example Sentences for undetectable
Cite this Entry
“Undetectable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetectable. Accessed 29 Oct. 2025.
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