im·​per·​cep·​ti·​ble | \ ˌim-pər-ˈsep-tə-bəl How to pronounce imperceptible (audio) \

Definition of imperceptible

: not perceptible by a sense or by the mind : extremely slight, gradual, or subtle imperceptible differences

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Other Words from imperceptible

imperceptibly \ ˌim-​pər-​ˈsep-​tə-​blē How to pronounce imperceptibly (audio) \ adverb

Examples of imperceptible in a Sentence

These changes will be imperceptible to most people. a slight difference in hue between the two glasses that's imperceptible unless they're placed side by side

Recent Examples on the Web

In this arena, hitting is transformed into an aggressive art of imperceptible bunts and long balls, with nearly every pitch put into play. Eliza Mackintosh, CNN, "MLB is making a play for popularity in Europe. But in Finland, they've already made baseball their own," 28 June 2019 Just a second before, the LIGO and VIRGO detectors had felt gravitational waves’ near-imperceptible tug passing through. Liz Kruesi, National Geographic, "Dear Fermi: What it means to see the universe's extremes," 11 June 2019 Oregon’s greenhouse emissions, if eliminated tomorrow, would have an imperceptible impact on global output, experts confirm., "Carbon bill revamp proposal: A real threat or political theater?," 8 June 2019 The device wasn’t the first time the Dresden team sought to measure nearly imperceptible amounts of force. Daniel Oberhaus, WIRED, "A Mythical Form of Space Propulsion Finally Gets a Real Test," 5 June 2019 Folks who microdose take such a small amount of these drugs that their hallucinogenic effects are virtually imperceptible. Allure, "Your Guide to Microdosing for Anxiety and Depression," 19 Apr. 2019 As most budget disputes go, differences over hundreds of millions of dollars are usually imperceptible and easily solved. Jonathan Lemire, The Seattle Times, "As clock ticks, new hurdle emerges in border security talks," 10 Feb. 2019 His innovations were often hidden within the dress, in sly cut and imperceptible, airtight construction. Laura Jacobs, WSJ, "‘James Galanos: Design Integrity’ Review: The West Coast King of Fashion," 10 Nov. 2018 In Georgia, where Mrs. Clinton’s imprimatur could harm Ms. Abrams in a general election, the endorsement will be delivered only through phone messages to Democratic voters — making the appeal imperceptible to everyone else. Alexander Burns, New York Times, "Hillary and Bill Clinton Go Separate Ways for 2018 Midterm Elections," 21 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'imperceptible.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of imperceptible

15th century, in the meaning defined above

History and Etymology for imperceptible

Middle English, from Middle French, from Medieval Latin imperceptibilis, from Latin in- + Late Latin perceptibilis perceptible

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Statistics for imperceptible

Last Updated

4 Jul 2019

Look-up Popularity

Time Traveler for imperceptible

The first known use of imperceptible was in the 15th century

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More Definitions for imperceptible



English Language Learners Definition of imperceptible

: impossible to see or notice


im·​per·​cep·​ti·​ble | \ ˌim-pər-ˈsep-tə-bəl How to pronounce imperceptible (audio) \

Kids Definition of imperceptible

: not noticeable by the senses or by the mind : very small or gradual imperceptible changes

Other Words from imperceptible

imperceptibly \ -​blē \ adverb

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More from Merriam-Webster on imperceptible

Rhyming Dictionary: Words that rhyme with imperceptible

Thesaurus: All synonyms and antonyms for imperceptible

Spanish Central: Translation of imperceptible

Nglish: Translation of imperceptible for Spanish Speakers

Comments on imperceptible

What made you want to look up imperceptible? Please tell us where you read or heard it (including the quote, if possible).


to form ideas or theories about something

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