[ im-per-sep-tuh-buhl ]
/ ˌɪm pərˈsɛp tə bəl /
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See synonyms for: imperceptible / imperceptibly on Thesaurus.com

very slight, gradual, or subtle: the imperceptible slope of the road.
not perceptible; not perceived by or affecting the senses.
something not capable of being perceived by the senses: metaphysical speculation about imperceptibles.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of imperceptible

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

OTHER WORDS FROM imperceptible

im·per·cep·ti·bil·i·ty, im·per·cep·ti·ble·ness, nounim·per·cep·ti·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use imperceptible in a sentence

  • This time the sacred figure, not cloaked with mysterious imperceptibility, was sharp on the plate.

    Autobiography of a YOGI|Paramhansa Yogananda
  • Ninety-nine hundredths of this amiable world of ours would have guffawed the poor creature into imperceptibility ages ago.

    The Return|Walter de la Mare
  • He stood up, making an excuse, imperceptibility lurching as he did so.

  • But you,” he continued, moving imperceptibility a little nearer to her, “you are mine.

    Anna the Adventuress|E. Phillips Oppenheim

British Dictionary definitions for imperceptible

/ (ˌɪmpəˈsɛptɪbəl) /

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

Derived forms of imperceptible

imperceptibility or imperceptibleness, nounimperceptibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012