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
But at some imperceptible moment, things shifted; suddenly black fins, white tails and entire submarinelike bodies were popping out of the water just a few hundred feet away.
—
Kelso Harper, Scientific American, 16 Dec. 2025
In the middle distance imperceptible to language?
—Literary Hub, 8 Dec. 2025
Finish with very soft, almost imperceptible waves.
—Andrea Carbajal, Glamour, 5 Dec. 2025
Caplan-Auerbach is studying nearly imperceptible seismic tremors that have preceded major landslides, including the August one in Tracy Arm.
—Ella Nilsen, CNN Money, 22 Oct. 2025
See All Example Sentences for imperceptible
Kelso Harper, Scientific American, 16 Dec. 2025
In the middle distance imperceptible to language?
—Literary Hub, 8 Dec. 2025
Finish with very soft, almost imperceptible waves.
—Andrea Carbajal, Glamour, 5 Dec. 2025
Caplan-Auerbach is studying nearly imperceptible seismic tremors that have preceded major landslides, including the August one in Tracy Arm.
—Ella Nilsen, CNN Money, 22 Oct. 2025
See All Example Sentences for imperceptible
Recent Examples of Synonyms for imperceptible
Adjective
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For its latest trick, Taara is now providing high-speed internet access across cities using invisible beams of light.—
Abhimanyu Ghoshal,
New Atlas,
28 Feb. 2026
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What does accountability look like when the biggest financial beneficiaries stay invisible?—
Matt Parr,
Chicago Tribune,
28 Feb. 2026
Adjective
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The subtle split among Democrats began emerging minutes after the first US strikes on Saturday.—
Nicholas Wu,
semafor.com,
5 Mar. 2026
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This Madewell pair is made from high-quality denim with a subtle stretch to hug your curves and ensure all-day comfort.—
Jordan Julian,
InStyle,
5 Mar. 2026
Adjective
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In legal and operational terms, this is indistinguishable from a tax overpayment reflected on an IRS 1040 form.—
Mark Pirie,
Chicago Tribune,
2 Mar. 2026
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In an experimental procedure that involved increasing the amount of a certain protein in cells, junior scientists with just one week of LabOS training obtained results that were virtually indistinguishable from those of expert scientists.—
Deni Ellis Béchard,
Scientific American,
27 Feb. 2026
Cite this Entry
“Imperceptible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/imperceptible. Accessed 7 Mar. 2026.
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