undetectable

adjective

un·​de·​tect·​able ˌən-di-ˈtek-tə-bəl How to pronounce undetectable (audio)
-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
undetectably adverb
an undetectably small change

Examples of undetectable in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Any small flaws are repaired so as to be undetectable. Rhonda Richford, WWD, 6 Feb. 2025 The difference is nearly undetectable, yet the actress’ button-down shirt, fuzzy crewneck sweater, and square-toe boots seemed instantly elevated with the straight-leg silhouette. Clara McMahon, People.com, 29 Jan. 2025 Dark matter is what astronomers call hypothetical undetectable particles that are invisible. Jamie Carter, Forbes, 6 Jan. 2025 That’s why we were intrigued by Brian’s inquiry about using other ways to make Apple AirTags undetectable to car thieves or outsmarting them twice. Kurt Knutsson, Cyberguy Report, Fox News, 4 Jan. 2025 See all Example Sentences for undetectable 

Word History

First Known Use

1863, in the meaning defined above

Time Traveler
The first known use of undetectable was in 1863

Dictionary Entries Near undetectable

Cite this Entry

“Undetectable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetectable. Accessed 16 Feb. 2025.

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