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
However, undetectable cancer cells often remain in the body, so additional treatments are needed to find and eliminate these cells.
—Kaitlin Sullivan, NBC news, 1 June 2026
Kerley was in a line of six runners who had to be called out of the blocks three times — an energy sapper — first for a sprinter to re-tie his shoe, then twice more when the false-start signal went off, but early motion was, apparently, undetectable and nobody was disqualified.
—Los Angeles Times, 25 May 2026
Vogue consulted with masterful artists such as Tasha Reiko Brown, Amy Komorowski, Emma Day, and Aika Danica Flores to get their tricks for achieving low-key, everyday makeup looks that are undetectable to even the most trained of eyes.
—Christian Allaire, Vogue, 22 May 2026
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
See All Example Sentences for undetectable
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Kaitlin Sullivan, NBC news, 1 June 2026
Kerley was in a line of six runners who had to be called out of the blocks three times — an energy sapper — first for a sprinter to re-tie his shoe, then twice more when the false-start signal went off, but early motion was, apparently, undetectable and nobody was disqualified.
—Los Angeles Times, 25 May 2026
Vogue consulted with masterful artists such as Tasha Reiko Brown, Amy Komorowski, Emma Day, and Aika Danica Flores to get their tricks for achieving low-key, everyday makeup looks that are undetectable to even the most trained of eyes.
—Christian Allaire, Vogue, 22 May 2026
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
See All Example Sentences for undetectable
Cite this Entry
“Undetectable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetectable. Accessed 7 Jun. 2026.
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