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  1. easily excited: Prima donnas had the reputation of being excitable and temperamental.
  2. capable of being excited.
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Origin of excitable

From the Late Latin word excitābilis, dating back to 1600–10. See excite, -able
Related formsex·cit·a·ble·ness, nounex·cit·a·bly, adverbnon·ex·cit·a·ble, adjectivenon·ex·cit·a·ble·ness, nounnon·ex·cit·a·bly, adverbun·ex·cit·a·ble, adjectiveun·ex·cit·a·ble·ly, adverb

Synonyms for excitable

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Antonyms for excitable

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

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British Dictionary definitions for excitable


  1. easily excited; volatile
  2. (esp of a nerve) ready to respond to a stimulus
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Derived Formsexcitability or excitableness, nounexcitably, 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 excitable


c.1600, from Late Latin excitabilis "inciting, animating," from excitare (see excite). Related: Excitability.

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Online Etymology Dictionary, © 2010 Douglas Harper

excitable in Medicine


  1. Capable of reacting to a stimulus. Used of a tissue, cell, or cell membrane.
  2. Capable of emotional arousal.
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Related formsex•cit′a•bili•ty null n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.