irritability

noun

ir·​ri·​ta·​bil·​i·​ty ˌir-ə-tə-ˈbi-lə-tē How to pronounce irritability (audio)
plural irritabilities
1
: the quality or state of being irritable: such as
a
: quick excitability to annoyance, impatience, or anger : petulance
b
: abnormal or excessive excitability of an organ or part of the body
2
: the property of protoplasm and of living organisms that permits them to react to stimuli

Examples of irritability in a Sentence

the librarian's well-known irritability makes students hesitant to ask questions
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Excess cortisol can also affect mood, leading to nervousness, anxiety, or irritability. Veronica Cristino, Vogue, 30 Mar. 2025 Symptoms specific to spring and summer SAD can include agitation, anxiety, irritability, insomnia, and loss of appetite, Dr. Bacow says. Carolyn L. Todd, SELF, 26 Mar. 2025 Those are intended to treat several symptoms, including potential migraines, fatigue and irritability that come from premenstrual syndrome. Max Scheinblum, The Denver Post, 22 Mar. 2025 Your Mood and Concentration Are Off One of the most common but overlooked signs of sleep deprivation is irritability, mood swings and difficulty focusing. Dan Perry, Newsweek, 28 Feb. 2025 See All Example Sentences for irritability

Word History

First Known Use

1755, in the meaning defined at sense 2

Time Traveler
The first known use of irritability was in 1755

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Cite this Entry

“Irritability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irritability. Accessed 14 Apr. 2025.

Kids Definition

irritability

noun
ir·​ri·​ta·​bil·​i·​ty ˌir-ət-ə-ˈbil-ət-ē How to pronounce irritability (audio)
plural irritabilities
1
: the quality or state of being irritable
especially : readiness to become annoyed or angry
2
: the property of living tissue and living things that permits them to react to stimuli

Medical Definition

irritability

noun
ir·​ri·​ta·​bil·​i·​ty ˌir-ət-ə-ˈbil-ət-ē How to pronounce irritability (audio)
plural irritabilities
1
: the property of protoplasm and of living organisms that permits them to react to stimuli
2
a
: quick excitability to annoyance, impatience, or anger
b
: abnormal or excessive excitability of an organ or part of the body (as the stomach or bladder)

More from Merriam-Webster on irritability

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