ir·​reg·​u·​lar·​i·​ty | \ i-ˌre-gyə-ˈler-ə-tē How to pronounce irregularity (audio) , ˌi(r)-, -ˈla-rə- \
plural irregularities

Definition of irregularity

1 : something that is irregular (such as improper or dishonest conduct) alleged irregularities in the city government
2 : the quality or state of being irregular

Examples of irregularity in a Sentence

the irregularity of his behavior He is suffering from irregularity.
Recent Examples on the Web Wherever there was a flimsy suggestion, an affidavit alleging an irregularity or a prospective lawsuit, there was Hannity attempting to will Trump into another term in the White House. Washington Post, "Fox News’s Ainsley Earhardt: ‘So many people’ are questioning election," 5 Jan. 2021 Republicans could try to object to counting the electoral votes of each state in which Republicans have challenged Biden’s win by claiming fraud, irregularity, or unlawful election procedures. Jeannie Suk Gersen, The New Yorker, "How Congressional Republicans Could Sabotage the Counting of Electoral Votes," 4 Jan. 2021 Some never escape the vicious circle of debt and irregularity. Aritz Parra, Star Tribune, "A migrant's odyssey from boat to COVID nursing job in Spain," 18 Dec. 2020 In moments like those, when the failure will be magnified solely because of the irregularity of the play call and who’s on the field, Reich will have to steady himself. Jim Ayello, The Indianapolis Star, "Colts' Reich on Jacoby Brissett package: 'Who says starting QB has to play every play?'," 28 Nov. 2020 According to the National Down Syndrome Society, about one in every 700 babies in the United States — or about 6,000 a year — is born with the condition, which results from a chromosomal irregularity. Fox News, "Appeals court rules Tennessee can enforce Down Syndrome abortion ban," 22 Nov. 2020 Trump, however, has vowed to fight, raising questions about voting irregularity in several key states. Leada Gore |, al, "Alabama Congressman Mo Brooks says he won’t vote to ratify Biden victory," 8 Nov. 2020 If your tortilla is turning out more amoeba-shaped than round, embrace the irregularity. Washington Post, "How to make light, chewy, flavor-packed flour tortillas at home," 15 Oct. 2020 Defined as the end of a woman’s menstrual cycle, women with menopause experience a natural decline in their reproductive function with common symptoms such as hot flashes, night sweats, and mood irregularity. Brendan Bures,, "Women with menopause turn to cannabis for treatment," 9 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'irregularity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of irregularity

14th century, in the meaning defined at sense 1

History and Etymology for irregularity

Middle English irregularite, from Medieval Latin irregularitat-, irregularitas, from Late Latin irregularis

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Time Traveler for irregularity

Time Traveler

The first known use of irregularity was in the 14th century

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Statistics for irregularity

Last Updated

20 Jan 2021

Cite this Entry

“Irregularity.” Dictionary, Merriam-Webster, Accessed 25 Feb. 2021.

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More Definitions for irregularity



English Language Learners Definition of irregularity

: the quality or state of being irregular
: something that is irregular
: something that is not usual or proper and that usually indicates dishonest behavior


ir·​reg·​u·​lar·​i·​ty | \ i-ˌre-gyə-ˈler-ə-tē How to pronounce irregularity (audio) \
plural irregularities

Kids Definition of irregularity

1 : the quality or state of being unusual, uneven, or happening at different times
2 : something that is unusual, uneven, or happening at different times


ir·​reg·​u·​lar·​i·​ty | \ (ˌ)ir-ˌ(r)eg-yə-ˈlar-ət-ē How to pronounce irregularity (audio) \
plural irregularities

Medical Definition of irregularity

1 : the quality or state of being irregular irregularity of breathing hormonal irregularities
2 : occasional constipation more fiber in one's diet may help relieve irregularity

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ir·​reg·​u·​lar·​i·​ty | \ ir-ˌre-gyə-ˈlar-ə-tē How to pronounce irregularity (audio) \
plural irregularities

Legal Definition of irregularity

: something that is irregular an irregularity in the proceeding

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