as in invisible
not perceptible by a sense or by the mind
a slight difference in hue between the two glasses that's imperceptible unless they're placed side by side
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Recent Examples of imperceptible
The researchers' work showed how a commercially available mmWave radar sensor can be used to pick up the practically imperceptible vibrations of a phone's earpiece, and the resulting vibrations of the phone itself, from a few feet away.
—
Abhimanyu Ghoshal, New Atlas, 22 Aug. 2025
While imperceptible to humans, these millisecond variations can impact atomic clocks and systems reliant on precise timekeeping.
—James Powel, USA Today, 5 Aug. 2025
As mentioned above, the crease is almost imperceptible now.
—ArsTechnica, 31 July 2025
And to most of us, that lost time will be imperceptible.
—Sara Hashemi, Smithsonian Magazine, 22 July 2025
See All Example Sentences for imperceptible
Abhimanyu Ghoshal, New Atlas, 22 Aug. 2025
While imperceptible to humans, these millisecond variations can impact atomic clocks and systems reliant on precise timekeeping.
—James Powel, USA Today, 5 Aug. 2025
As mentioned above, the crease is almost imperceptible now.
—ArsTechnica, 31 July 2025
And to most of us, that lost time will be imperceptible.
—Sara Hashemi, Smithsonian Magazine, 22 July 2025
See All Example Sentences for imperceptible
Recent Examples of Synonyms for imperceptible
Adjective
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Although this is a common diagnosis, its symptoms can be invisible and interfere with everyday activities like dining out and shopping.—
Lisa Cericola,
Southern Living,
9 Sep. 2025
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And in sport, where the thinnest of margins always matter, recognizing the invisible might be one of your most visible acts of leadership.—
Rick Burton,
Sportico.com,
7 Sep. 2025
Adjective
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This planet is electric, unpredictable and genius with its approach, but its transits are anything but subtle.—
Valerie Mesa,
PEOPLE,
6 Sep. 2025
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Even subtle light or noise can disrupt sleep cycles, preventing you from reaching the deeper, most restorative stages of sleep necessary for physical and mental recovery.—
Bryan Robinson,
Forbes.com,
6 Sep. 2025
Adjective
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These optical qualities mean the coating can generate clean energy while keeping the glass clear and natural-looking, and ensure that windows remain visually indistinguishable from ordinary glass.—
Georgina Jedikovska,
Interesting Engineering,
4 Sep. 2025
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The video tracks their growth together but by 11 months, the brothers are virtually indistinguishable in size, despite being just over 16 months apart.—
Daniella Gray,
MSNBC Newsweek,
2 Sep. 2025
Cite this Entry
“Imperceptible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/imperceptible. Accessed 11 Sep. 2025.
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