IMPERCEPTIBLE Synonyms: 54 Similar and Opposite Words

imperceptible

adjective

ˌim-pər-ˈsep-tə-bəl

Definition of imperceptible

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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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 imperceptible MacKinnon still didn’t smile, but responded with an almost imperceptible nod. — Mark Lazerus, New York Times, 14 May 2026 In my testing, signs, labels, license plates, odometers, VINs and document modifications came out imperceptible. — Jeffrey McGregor, Forbes.com, 5 June 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 All videos created with Omni will include Google's imperceptible digital watermark, SynthID, but Google is also adding content credentials verification to the Gemini app. — ABC News, 19 May 2026 See All Example Sentences for imperceptible

Recent Examples of Synonyms for imperceptible

Adjective

Dazzling Venus would be invisible due to its proximity to the sun.

— Joe Rao, Space.com, 4 July 2026
Developed by Giacomo Sasso, a postdoctoral researcher at Queen Mary University of London, this new tactile system allows robots to see touch in real time by instantly transforming invisible mechanical forces into vivid, dynamic color patterns.

— Mrigakshi Dixit, Interesting Engineering, 3 July 2026

Definition of invisible

Adjective

Most infections produce no symptoms, or symptoms indistinguishable from a summer flu, and are never attributed to a cause.

— John Drake, Forbes.com, 4 July 2026
American beer brands became largely indistinguishable from one another, and consolidation continued.

— Jay R. Brooks, Mercury News, 2 July 2026

Definition of indistinguishable

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imperatives

imperceptible

imperceptibly

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“Imperceptible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/imperceptible. Accessed 8 Jul. 2026.

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Synonyms of imperceptible

adjective

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