irritable

[ir-i-tuh-buhl]
adjective
1.
easily irritated or annoyed; readily excited to impatience or anger.
2.
Physiology, Biology. displaying irritability.
3.
Pathology. susceptible to physical irritation.
4.
Medicine/Medical. abnormally sensitive to a stimulus.

Origin:
1655–65; < Latin irrītābilis, equivalent to irrītā(re) to irritate + -bilis -ble

irritableness, noun
irritably, adverb
nonirritable, adjective
nonirritableness, noun
nonirritably, adverb
unirritable, adjective
unirritably, adverb


1. snappish, petulant, resentful. Irritable, testy, touchy, irascible are adjectives meaning easily upset, offended, or angered. Irritable means easily annoyed or bothered, and it implies cross and snappish behavior: an irritable clerk, rude and hostile; Impatient and irritable, he was constantly complaining. Testy describes the same kind of behavior or response, particularly to minor annoyances: always on edge, testy and sharp in response; testy and petulant, resenting any interruption. Touchy emphasizes oversensitivity and readiness to take offense, even when none is intended: especially touchy about any reference to obesity. Irascible means habitually angry or easily aroused to anger: an irascible tyrant, roaring at employees for the slightest error.
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World English Dictionary
irritable (ˈɪrɪtəbəl)
 
adj
1.  quickly irritated; easily annoyed; peevish
2.  (of all living organisms) capable of responding to such stimuli as heat, light, and touch
3.  pathol abnormally sensitive
 
irrita'bility
 
n
 
'irritableness
 
n
 
'irritably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

irritable ir·ri·ta·ble (ĭr'ĭ-tə-bəl)
adj.

  1. Capable of reacting to a stimulus.

  2. Abnormally sensitive to a stimulus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
He was tight-lipped and irritable on the stump: so much so that several
  journalists covering his campaign mounted a brief boycott.
The process of getting a license may be long and irritable, but it teaches the
  skills needed to be safe.
If she stops, she can't sleep or eat and becomes extremely restless, anxious
  and irritable.
It does affect his behaviour as he cannot sleep and thus becomes irritable and
  unhappy.
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