ir·​reg·​u·​lar·​i·​ty | \ i-ˌre-gyə-ˈler-ə-tē , 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

Accounting irregularities have left officials with the US National Intelligence Council to conclude that undetected smuggling has likely occurred. Dan Goodin, Ars Technica, "Dangerous plutonium stolen from rental car in a hotel parking lot," 16 July 2018 Her campaign also put out a public call for voters to come forward with stories of any voting irregularities and difficulties. Cameron Mcwhirter, WSJ, "Democrat Takes Legal Steps in Georgia Governor’s Race," 12 Nov. 2018 The group of independent experts warned of irregularities and sloppiness in the investigation. Fox News, "Trial for murder of Honduran environmental activist delayed," 18 Sep. 2018 He was accused of financial irregularities and acquitted by a military court — only to be convicted of conduct unbecoming an officer. Gregory Korte, USA TODAY, "A Trump pardon for boxer Jack Johnson would be just the third posthumous pardon in history," 25 Apr. 2018 This will remove the filter's papery taste, as well as eliminate surface irregularities and dry spots, allowing the brewing water to soak the grounds more evenly. Francine Maroukian, Popular Mechanics, "Hack Your Coffee: How to Use a French Press the Right Way," 15 Feb. 2015 Supreme Court annuls first-round result after a candidate alleges irregularities. Bharatha Mallawarachi, Fox News, "Timeline of political events leading up to Maldives election," 21 Sep. 2018 The fraudsters often claim to be representatives from Chinese or Taiwanese government agencies and demand bank transfers to clear cases involving back taxes, kidnappings or health insurance irregularities. Ralph Jennings,, "Taiwanese in U.S. targeted by fraudsters. Could the calls be coming from China?," 9 June 2018 Some specific irregularities were later revealed in sworn affidavits sent by Democratic attorneys to the state board. Dylan Scott, Vox, "There’s something very weird going on with this North Carolina House election," 30 Nov. 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.

See More

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

Keep scrolling for more

Learn More about irregularity

Share irregularity

Statistics for irregularity

Last Updated

5 Feb 2019

Look-up Popularity

Time Traveler for irregularity

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

See more words from the same century

Keep scrolling for more

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 \
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 \
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

Keep scrolling for more


ir·​reg·​u·​lar·​i·​ty | \ ir-ˌre-gyə-ˈlar-ə-tē \
plural irregularities

Legal Definition of irregularity

: something that is irregular an irregularity in the proceeding

Keep scrolling for more

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).


esteemed in general opinion

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!