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
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The problem is that deepfakes are designed to be undetectable using generative adversarial networks (GANs). Rick Hutchinson, Forbes, 6 Jan. 2025 People who use antiretroviral medications can reduce the viral load of HIV in the body to undetectable levels, which can stop them from passing it to others. Dan Perry, Newsweek, 4 Jan. 2025 The formula is pigmented but has an undetectable, skinlike finish. Venus Wong, refinery29.com, 20 Dec. 2024 And by combining the benefits of foundation and powder, Lancôme’s Dual Finish Powder Foundation looks and feels undetectable on the skin, all while blurring texture from fine lines or breakouts. Katie McBroom, WWD, 4 Dec. 2024 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 22 Jan. 2025.

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