Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Easily irritated or annoyed.
  • adjective Medicine Abnormally or excessively sensitive to a stimulus.
  • adjective Capable of responding to a stimulus. Used of an organism.

from The Century Dictionary.

  • Susceptible to mental irritation; liable to the excitement of anger or passion; irascible; petulant.
  • Susceptible to physical irritation; capable of being stimulated to action by external agency; liable to contract, shrink, become inflamed, etc., when excited or stimulated: as, irritable nerves; an irritable wound.
  • Specifically, in physiology and botany, possessing the property of irritability.
  • Responding quickly to a stimulus; sensitive; impressible.
  • Synonyms Passionate, etc. (see irascible); fretful, peevish.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Capable of being irritated.
  • adjective Very susceptible of anger or passion; easily inflamed or exasperated.
  • adjective (Physiol.) Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.
  • adjective (Med.) Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Capable of being irritated.
  • adjective Easily exasperated or excited.
  • adjective Responsive to stimuli.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective capable of responding to stimuli
  • adjective easily irritated or annoyed
  • adjective abnormally sensitive to a stimulus

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[French irritable, from Latin irrītābilis, from irrītāre, to irritate.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

irritate +‎ -able

Examples

  • The song had ceased from his lips; but Mary was irritable from a burnt hand and a grandchild whose stomach refused to digest properly diluted cows 'milk.

    LIKE ARGUS OF THE ANCIENT TIMES

  • Anne Crank: Diary of a Young Girl - increasingly irritable from the combination of cabin fever and puberty, Anne begins to write bitter rants against those who share the attic with her.

    Archive 2007-02-01

  • Anne Crank: Diary of a Young Girl - increasingly irritable from the combination of cabin fever and puberty, Anne begins to write bitter rants against those who share the attic with her.

    Games are Afoot, Part II - Play On!

  • Yet people are quick to label irritable or angry people as “bad children” or “bad people.”

    Black Pain

  • Yet people are quick to label irritable or angry people as “bad children” or “bad people.”

    Black Pain

  • Yet people are quick to label irritable or angry people as “bad children” or “bad people.”

    Black Pain

  • Yet people are quick to label irritable or angry people as “bad children” or “bad people.”

    Black Pain

  • It buzzed in short, irritable circles before settling back to its feeding spot.

    Dragonfly in Amber

  • The song had ceased from his lips; but Mary was irritable from a burnt hand and a grandchild whose stomach refused to digest properly diluted cows 'milk.

    Like Argus of the Ancient Times

  • French teacher, loving children, wanting in dignity, broken in English, irritable in disposition; a sensitive young stranger, fresh from home, charming in innocence, sad with thoughts of a dear mother; a poor, frightened kitten, are all objects for boys 'cruelty to gloat over.

    Captain Mugford Our Salt and Fresh Water Tutors

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