View synonyms for imperceptible


[ im-per-sep-tuh-buhl ]


  1. very slight, gradual, or subtle:

    the imperceptible slope of the road.

  2. not perceptible; not perceived by or affecting the senses.

    Synonyms: undetectable, unperceivable, hidden


  1. something not capable of being perceived by the senses:

    metaphysical speculation about imperceptibles.


/ ˌɪmpəˈsɛptɪbəl /


  1. too slight, subtle, gradual, etc, to be perceived

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Derived Forms

  • ˌimperˈceptibly, adverb
  • ˌimperˌceptiˈbility, noun

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Other Words From

  • imper·cepti·bili·ty imper·cepti·ble·ness noun
  • imper·cepti·bly adverb

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Word History and Origins

Origin of imperceptible1

From the Medieval Latin word imperceptibilis, dating back to 1520–30. See im- 2, perceptible

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Example Sentences

Since the difficulty of this care remains largely imperceptible to all save those who provide it, there have been few attempts, governmental or otherwise, to make it better, easier, or less of a life-swallowing burden.

From Vox

One common concern is that some LED desk lamps have a very slight, even imperceptible flicker that can cause eye strain.

Photo technologies and image filters can do this in ways that are almost imperceptible.

“What we found when we used this different technique is that there were nearly imperceptible rings that originally went unnoticed,” Ernande says.

Though, if the company follows the same tactics as the Beats Solo Pro, the actual transition should be smooth and almost imperceptible to the listener.

The nature of the harm allegedly caused by Goddard was “subtle, imperceptible and pernicious.”

The number of straight men who change their name upon marriage, remains so tiny as to be imperceptible.

He might have overcome his drawl, lobbying past, and imperceptible poll ratings to win the GOP nomination.

It was then that I felt the ground move under me slightly—it was almost imperceptible.

But young Mrs. Haggard shrank from her touch with an almost imperceptible shudder.

With difficulty his almost imperceptible spark of life had been screened and fanned into a dim and flickering flame.

There exists nothing so subtle, so simple, and so imperceptible which is not revealed to us by a something in its composition.

My three months' stay has taught me the art of conversing by an almost imperceptible motion of the lips.

I noticed here the familiar, almost imperceptible click of the small white teeth.