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

Essentially, in the current setup, there are plenty of chances for the ball to be affected by irregularities, however tiny—which could hypothetically be removed by a ball that doesn’t need mud. Emma Baccellieri,, "Mud Maker: The Man Behind MLB’s Essential Secret Sauce," 7 Aug. 2019 The investigators, too, are entitled not to be presumed guilty of crimes, even by those of us who are convinced that there were investigative irregularities. Andrew C. Mccarthy, National Review, "The DOJ Will Not Prosecute James Comey over Trump Memos," 3 Aug. 2019 But, the registry has been rife with irregularities. Fox News, "After Epstein death, glaring loopholes in national sex offender registry raise concerns," 16 Aug. 2019 Fiscal irregularities were unearthed once officers other than Whittaker took over fiduciary duties for the union, according to authorities. Danny Mcdonald,, "Methuen officer indicted for allegedly stealing from police union," 31 July 2019 The club would secure their best league finish for nearly a quarter of a century on their return, placing fourth in the First Division, though financial irregularities saw them barred from entering European competition., "Brian Clough: He Wasn't the Best Manager in the Business, But He Was in the Top 1," 29 July 2019 Her legal work ended last year, when officials began investigating financial irregularities after a social worker tipped off authorities in about 2017. John Caniglia,, "Pepper Pike attorney accused of misappropriating more than $1 million from clients, many with developmental disabilities," 30 June 2019 Independent election observers have confirmed some polling irregularities across the archipelago nation of more than 260 million people, but no widespread fraud of the kind Mr. Subianto alleged. Ben Otto And I Made Sentana, WSJ, "Indonesian Court Upholds Widodo’s Election Win," 27 June 2019 The state Education Department in April announced plans to recommend the closure of Smothers for special education failures and financial irregularities at the school., "Citing ‘serious violations,’ state school board votes to close Smothers Academy," 20 June 2019

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

3 Sep 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 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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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

Comments on irregularity

What made you want to look up irregularity? Please tell us where you read or heard it (including the quote, if possible).


readily or continually undergoing change

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