Dictionary.com
definitions
  • synonyms

irritability

[ir-i-tuh-bil-i-tee]
See more synonyms for irritability on Thesaurus.com
noun, plural ir·ri·ta·bil·i·ties.
  1. the quality or state of being irritable.
  2. Physiology, Biology. the ability to be excited to a characteristic action or function by the application of some stimulus: Protoplasm displays irritability by responding to heat.
Show More

Origin of irritability

From the Latin word irrītābilitās, dating back to 1745–55. See irritable, -ity
Related formsnon·ir·ri·ta·bil·i·ty, nounsu·per·ir·ri·ta·bil·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for irritability

Contemporary Examples

Historical Examples

  • His eccentricity was a combination of absent-mindedness and irritability.

  • The work of vegetation begins first in the irritability of the bark and leaf-buds.

    Essays, First Series

    Ralph Waldo Emerson

  • It was impressive riding to those who knew the filly's irritability, uncertainty.

    Garrison's Finish

    W. B. M. Ferguson

  • The irritability of the one active cell subsided, that of the others was aroused.

    The Paliser case

    Edgar Saltus

  • Did you notice any symptoms of mental disturbance or irritability about him at any time?

    The Shrieking Pit

    Arthur J. Rees


Word Origin and History for irritability

n.

1755, from irritable + -ity.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

irritability in Medicine

irritability

(ĭr′ĭ-tə-bĭlĭ-tē)
n.
  1. The capacity to respond to stimuli.
  2. Abnormal or excessive sensitivity to stimuli of an organism, organ, or body part.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.