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See more synonyms for insensible on Thesaurus.com
  1. incapable of feeling or perceiving; deprived of sensation; unconscious, as a person after a violent blow.
  2. without or not subject to a particular feeling or sensation: insensible to shame; insensible to the cold.
  3. unaware; unconscious; inappreciative: We are not insensible of your kindness.
  4. not perceptible by the senses; imperceptible: insensible transitions.
  5. unresponsive in feeling.
  6. not susceptible of emotion or passion; void of any feeling.
  7. not endowed with feeling or sensation, as matter; inanimate.
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Origin of insensible

First recorded in 1350–1400; Middle English word from Latin word insēnsibilis. See in-3, sensible
Related formsin·sen·si·bly, adverbin·sen·si·bil·i·ty, noun

Synonyms for insensible

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for insensible

cold, gradual, imperceptible, inanimate, insensate, numb, obdurate, oblivious, torpid, unaware, unconscious, unfeeling, unintelligible, unmindful, inappreciable

Examples from the Web for insensible

Contemporary Examples of insensible

Historical Examples of insensible

  • I was not insensible to the advantages of his proposal, and gladly assured him of my acceptance.

    Tanglewood Tales

    Nathaniel Hawthorne

  • Mr. Hervey could not be insensible to her distress or to her delicacy.

  • I am not insensible of the need of spiritual renovation in our Society.

  • He was lying there insensible, blood oozing from a wound in the forehead.

    The Channings

    Mrs. Henry Wood

  • Let then your future life show that you are not insensible of the magnitude of the obligation.

    Gomez Arias

    Joaqun Telesforo de Trueba y Coso

British Dictionary definitions for insensible


  1. lacking sensation or consciousness
  2. (foll by of or to) unaware (of) or indifferent (to)insensible to suffering
  3. thoughtless or callous
  4. a less common word for imperceptible
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Derived Formsinsensibility or insensibleness, nouninsensibly, 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

Word Origin and History for insensible


c.1400, "lacking the power to feel with the senses," from Latin insensibilis "that cannot be felt," from in- "not" (see in- (1)) + sensibilis (see sensible). Also sometimes in Middle English "incapable of being felt or perceived by the senses" (early 15c.). Meaning "unconscious" is attested from early 15c. See insensate.

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Online Etymology Dictionary, © 2010 Douglas Harper

insensible in Medicine


  1. Having lost consciousness, especially temporarily; unconscious.
  2. Lacking physical sensation or the power to react, as to pain or cold; numb.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.