UNDETECTABLE Synonyms: 48 Similar and Opposite Words

undetectable

adjective

Definition of undetectable

as in imperceptible

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Example Sentences

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.

Recent Examples of undetectable These tools can even be overlaid on the interview screen itself, claiming to appear invisible and undetectable. — IEEE Spectrum, 13 July 2026 Could the generations growing up with their brains hooked to endless video feeds be developing some kind of novel, as-yet-undetectable cognitive brilliance? — Rose Horowitch, The Atlantic, 8 July 2026 Patented techniques exist that alter a film's audio track just enough to be undetectable to a paying audience but detectable, and degraded, on a bootlegged copy. — Damion Taylor, Forbes.com, 7 July 2026 Thanks to his medication, doctors have confirmed to him that the virus has reached undetectable levels in his body. — Luke Chinman, PEOPLE, 29 June 2026 See All Example Sentences for undetectable

Recent Examples of Synonyms for undetectable

Adjective

The contact was imperceptible to the naked eye, but a space-age sensor in the ball had confirmed it.

— Los Angeles Times, Los Angeles Times, 12 July 2026
The tool, developed by independent AI engineer Luke Geel, analyzes past results and players’ activity—from posture to blink rate—spotting connections that might be imperceptible to the average viewer but visible to top pros.

— Jacob Feldman, Sportico.com, 3 July 2026

Definition of imperceptible

Adjective

This is a common leadership blind spot—especially among high performers—where admitting any vulnerability, or even pausing, feels indistinguishable from weakness.

— Julian Hayes II, Forbes.com, 25 July 2026
The novel’s lack of interest in what’s going on inside its characters’ phones becomes indistinguishable from a disinterest in what’s happening in their minds.

— Hillary Kelly, The Atlantic, 24 July 2026

Definition of indistinguishable

Adjective

Tornyol’s latest model, LeSonar2, features 32 ultrasonic emitters that produce ultrasonic pulses (inaudible to humans) which reflect off nearby objects or insects.

— New Atlas, New Atlas, 26 July 2026
An inaudible heartbeat reverberates through the space at a frequency below human hearing, producing vibrations that can be felt by those standing nearby.

— Michelle F. Solomon, Miami Herald, 21 July 2026

Definition of inaudible

Adjective

Because the brand provides a significant level of tangible and intangible support, understanding the royalty structure is essential.

— Angelo Chavez, Forbes.com, 31 July 2026
Following the Tour for three weeks, the manner in which the race appears and disappears is eerie, there is something both intangible and overwhelming about its presence.

— Jacob Whitehead, New York Times, 26 July 2026

Definition of intangible

Browse Nearby Words

undesired

undetectable

undetected

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Style

“Undetectable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undetectable. Accessed 9 Aug. 2026.

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Synonyms of undetectable

adjective

Example Sentences

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Cite this Entry

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