[ ir-i-tuh-bil-i-tee ]
/ ˌɪr ɪ təˈbɪl ɪ ti /
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noun, plural ir·ri·ta·bil·i·ties.

the quality or state of being irritable.
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.



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Origin of irritability

From the Latin word irrītābilitās, dating back to 1745–55. See irritable, -ity

OTHER WORDS FROM irritability

non·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. 2021

Example sentences from the Web for irritability

Medical definitions for irritability

[ ĭr′ĭ-tə-bĭlĭ-tē ]


The capacity to respond to stimuli.
Abnormal or excessive sensitivity to stimuli of an organism, organ, or body part.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.