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 another, the other three teammates are rendered practically invisible, despite being a key part of the movie’s ensemble.—
Siddhant Adlakha,
Variety,
14 Mar. 2026
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Normally, such events are invisible to telescopes, producing only faint ripples in spacetime.—
Rupendra Brahambhatt,
Interesting Engineering,
14 Mar. 2026
Adjective
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Among California’s most upscale neighborhoods, a subtle reshuffling has taken place in recent decades, with the highest home values migrating from Northern California to Southern California.—
Terry Castleman,
Los Angeles Times,
12 Mar. 2026
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Key Takeaways The symptoms of transthyretin amyloid cardiomyopathy (ATTR-CM)—a disease of the heart muscle—are often subtle and can mimic those of other heart conditions, especially in the early stages.—
Colleen Doherty,
Verywell Health,
11 Mar. 2026
Adjective
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Save for a few silvery additions, Hurley looked almost indistinguishable from her 1999 Met Gala photos.—
Meg Walters,
InStyle,
9 Mar. 2026
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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
Cite this Entry
“Imperceptible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/imperceptible. Accessed 18 Mar. 2026.
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