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

When Modesitt was 16 weeks pregnant, her obstetrician referred her to Indianapolis for monitoring after tests revealed some irregularities. Shari Rudavsky, Indianapolis Star, "The machine that saved Millie — and 999 other Riley kids before her," 6 June 2019 The investigation looked at allegations of possible bidding irregularities involving two companies, including GroundsKeeper Landscape Care, which Pekau has since sold but did work for years for Orland Park. Mike Nolan, Daily Southtown, "Orland Park OKs payment of legal bill," 4 June 2019 Results of the March 24 poll have been murky for weeks amid reports that some 5% of total ballots were invalidated, among other irregularities. The Editorial Board, WSJ, "Democracy Dwindles in Thailand," 4 Apr. 2019 Those dueling claims as well as the concerns about irregularities highlight continuing deep divisions in Thailand and indicate that Southeast Asia’s second-largest economy is no closer to escaping its long period of political instability. Kaweewit Kaewjinda, The Seattle Times, "Election observers call still-partial Thai vote count flawed," 26 Mar. 2019 Asked about these procedural irregularities, Mr. Lu said the Foreign Ministry wouldn’t interfere with court business. Eva Dou, WSJ, "China Gives Four Days’ Notice for Canadian’s Retrial on Drug Charges," 11 Jan. 2019 The Winterkorn indictment focuses on the July 27, 2015, meeting in Wolfsburg, where Winterkorn and several other senior leaders were briefed about the diesel irregularities and how U.S. regulators were threatening to hold up certifying 2016 models. Tom Schoenberg,, "U.S. charges ex-VW CEO Winterkorn with fraud in diesel-cheating case," 4 May 2018 Hardly anyone understands how a blockchain works, and even experts don't have a good way to observe the online voting process for irregularities the way an election observer does in a traditional paper election. Timothy B. Lee, Ars Technica, "Blockchain-based elections would be a disaster for democracy," 6 Nov. 2018 The laser bolsters this action while wiping out surface irregularities. Jolene Edgar, Allure, "The Return of Downtime: Why Invasive Plastic Surgery Procedures Are on the Rise," 3 May 2018

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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Statistics for irregularity

Last Updated

11 Jun 2019

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Time Traveler for irregularity

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

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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 irregularitys
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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More from Merriam-Webster on irregularity

Rhyming Dictionary: Words that rhyme with irregularity

Spanish Central: Translation of irregularity

Nglish: Translation of irregularity for Spanish Speakers

Britannica English: Translation of irregularity for Arabic Speakers

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behavior toward others

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