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
Tager explained that the process involved mending the canvas, then treating the layers of paint to ensure that the damage was undetectable.
—News Desk, Artforum, 9 June 2026
As a result, drinking fountains that averaged over 58 parts per billion were lowered to undetectable levels of lead.
—Christiana Freitag, Chicago Tribune, 8 June 2026
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
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News Desk, Artforum, 9 June 2026
As a result, drinking fountains that averaged over 58 parts per billion were lowered to undetectable levels of lead.
—Christiana Freitag, Chicago Tribune, 8 June 2026
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
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 Jun. 2026.
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