irritant

1 of 2

noun

ir·​ri·​tant ˈir-ə-tənt How to pronounce irritant (audio)
: something that irritates or excites

irritant

2 of 2

adjective

: causing irritation
specifically : tending to produce physical irritation

Examples of irritant in a Sentence

Noun dust and other lung irritants The delay was a minor irritant.
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.
Noun
Common triggers include environmental allergens, foods, and skin irritants. Brandi Jones, Msn-Ed, Health, 28 Mar. 2025 In fact, the brand follows the National Eczema Association's ingredient guidelines to avoid irritants and allergens. Kiana Murden, Vogue, 10 Mar. 2025
Adjective
What To Know The Center for Countering Disinformation, a branch of Ukraine's National Security and Defense Council, said on Wednesday that Russia was using CS gas, an irritant chemical, in its Shahed explosive drones. Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025 Cubs fans of a certain age look at a four-year playoff drought as a minor irritant, a mere blip in their timeline of Cubbing. Paul Sullivan, Chicago Tribune, 23 Mar. 2025 See All Example Sentences for irritant

Word History

First Known Use

Noun

1802, in the meaning defined above

Adjective

1636, in the meaning defined above

Time Traveler
The first known use of irritant was in 1636

Browse Nearby Words

Cite this Entry

“Irritant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irritant. Accessed 28 Apr. 2025.

Kids Definition

irritant

1 of 2 adjective
ir·​ri·​tant ˈir-ə-tənt How to pronounce irritant (audio)
: tending to produce anger, annoyance, impatience, soreness, or inflammation
especially : tending to produce physical irritation

irritant

2 of 2 noun
: something that irritates

Medical Definition

irritant

1 of 2 adjective
ir·​ri·​tant ˈir-ə-tənt How to pronounce irritant (audio)
: causing irritation
specifically : tending to produce inflammation

irritant

2 of 2 noun
: something that irritates or excites
specifically : an agent by which irritation is produced
a chemical irritant

More from Merriam-Webster on irritant

Last Updated: - Updated example sentences
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