irregular

adjective
ir·​reg·​u·​lar | \ i-ˈre-gyə-lər How to pronounce irregular (audio) , ˌi(r)- \

Definition of irregular

 (Entry 1 of 2)

1a : not being or acting in accord with laws, rules, or established custom irregular conduct
b : not conforming to the usual pattern of inflection irregular verbs specifically : strong sense 16
c : not following a usual or prescribed procedure especially, British : celebrated without either proclamation of the banns or publication of intention to marry irregular marriage
2 : not belonging to or a part of a regular organized group specifically : not belonging to a regular army but raised for a special purpose irregular troops
3a : lacking perfect symmetry or evenness an irregular coastline
b : having one or more floral parts of the same whorl different in size, shape, or arrangement specifically : zygomorphic
4 : lacking continuity or regularity especially of occurrence or activity irregular employment

irregular

noun

Definition of irregular (Entry 2 of 2)

: one that is irregular: such as
a : a soldier who is not a member of a regular military force
b irregulars plural : merchandise that has minor defects or that falls next below the manufacturer's standard for firsts

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Other Words from irregular

Adjective

irregularly adverb

Synonyms & Antonyms for irregular

Synonyms: Adjective

Antonyms: Adjective

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Choose the Right Synonym for irregular

Adjective

irregular, anomalous, unnatural mean not conforming to rule, law, or custom. irregular implies not conforming to a law or regulation imposed for the sake of uniformity in method, practice, or conduct. concerned about his irregular behavior anomalous implies not conforming to what might be expected because of the class or type to which it belongs or the laws that govern its existence. her drive made her an anomalous figure in a sleepy organization unnatural suggests what is contrary to nature or to principles or standards felt to be essential to the well-being of civilized society. prisoners treated with unnatural cruelty

Examples of irregular in a Sentence

Adjective His behavior as a teacher was highly irregular. Her application was handled in an irregular manner. a very jagged, irregular surface The stone has an irregular shape. He has a very irregular schedule. The festival has been held at irregular intervals.
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Recent Examples on the Web: Adjective Yet trees tend to reproduce at irregular intervals, and populations in the East and West could be on different cycles. Ben Weissenbach, Smithsonian Magazine, 1 June 2021 At night, detention officers are required by state law to check on inmates at least every 30 minutes, at irregular intervals. jsonline.com, 23 Oct. 2020 The distillery is at 1110 NE Eighth Ave., in that under-loved, irregular polygon near downtown, north of Sunrise and east of the Brightline tracks. Ben Crandell, sun-sentinel.com, 7 Oct. 2021 In Utah's Salt Lake Valley, the Murray School District set up a private LTE network to service students, many of whom had irregular access and struggled to keep up with online instruction during the pandemic. Bart Van Aardenne, Forbes, 6 Oct. 2021 Multiple reports of blasts and irregular vital signs from wearable devices could put medevac and medical units on instant alert to receive and treat mass casualties. Kyle Mizokami, Popular Mechanics, 4 Oct. 2021 There are as many as 200,000 migrants of irregular status in Belgium, a nation of 10 million, according to estimates by aid organizations. New York Times, 1 Oct. 2021 In 2017, the Apple Heart Study set out to determine whether the Apple Watch could detect irregular heart rhythms (arrhythmias), including those caused by atrial fibrillation, a serious heart condition. Yasmin Tayag, Fortune, 30 Sep. 2021 The camera drops in at irregular intervals in consequential moments — a decade of love distilled into a handful of days. Amanda Whiting, Vulture, 26 Sep. 2021 Recent Examples on the Web: Noun As volunteer companies were raised to drive out the Mexican forces — who were occupying their own country — some of the irregulars were joined by free black men. Paula Allen, ExpressNews.com, 15 Feb. 2020 Turkish troops then began shelling Kurdish towns in Syria, and Turkish forces pushed forward, irregulars executing people in ditches along the road. Time, 14 Nov. 2019 Pakistani irregulars invaded, India intervened, and the two countries fought to a stalemate. Washington Post, 15 Feb. 2019 Somehow the regulars don’t seem to mind all the irregulars who come to gawk. Joshua Levine, WSJ, 15 Jan. 2019 Instead imagine high-tech mobs, an intifada with stones and drones, locals and irregulars in improvised warfare with the feds. Lance Morrow, WSJ, 6 July 2018 Who took up arms to help their husbands in their clashes with Turkish troops and Kurdish irregulars. Stephanie Petit, PEOPLE.com, 24 Apr. 2018 The onslaught followed days of army units and pro-government irregulars mobilizing from as far as the northern city of Aleppo before massing south of the capital. Nabih Bulos, latimes.com, 20 Apr. 2018 The army's 3rd and 4th divisions, the Republican Guard, Russian forces, tribal fighters and pro-government irregulars are expected to take part in the offensive, pro-government activists said. Nabih Bulos, latimes.com, 20 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'irregular.' 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 irregular

Adjective

14th century, in the meaning defined at sense 1a

Noun

15th century, in the meaning defined above

History and Etymology for irregular

Adjective

Middle English irreguler, from Anglo-French, from Late Latin irregularis not in accordance with rule, from Latin in- + regularis regular

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Time Traveler for irregular

Time Traveler

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

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Dictionary Entries Near irregular

irregenerate

irregular

irregular carrier

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Statistics for irregular

Last Updated

21 Oct 2021

Cite this Entry

“Irregular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irregular. Accessed 26 Oct. 2021.

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More Definitions for irregular

irregular

adjective

English Language Learners Definition of irregular

 (Entry 1 of 2)

: not normal or usual : not following the usual rules about what should be done
: not even or smooth : not regular in form or shape
: happening or done at different times that change often

irregular

noun

English Language Learners Definition of irregular (Entry 2 of 2)

: a soldier who does not belong to a country's official army

irregular

adjective
ir·​reg·​u·​lar | \ i-ˈreg-yə-lər How to pronounce irregular (audio) \

Kids Definition of irregular

1 : not following custom or rule Her methods are most irregular.
2 : not following the usual manner of inflection The verb "sell" is irregular because its past tense is "sold," not "selled."
3 : not straight, smooth, or even an irregular coastline
4 : not continuous or coming at set times He works irregular hours.

Other Words from irregular

irregularly adverb

irregular

adjective
ir·​reg·​u·​lar | \ (ˈ)ir-ˈ(r)eg-yə-lər How to pronounce irregular (audio) \

Medical Definition of irregular

1 : lacking perfect symmetry of form : not straight, smooth, even, or regular irregular teeth
2a : lacking continuity or regularity of occurrence, activity, or function irregular breathing
b of a physiological function : failing to occur at regular or normal intervals irregular menstruation have your bowels been irregular
c of an individual : failing to defecate at regular or normal intervals was constipated and very irregular

Other Words from irregular

irregularly adverb

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irregular

adjective
ir·​reg·​u·​lar | \ ir-ˈre-gyə-lər How to pronounce irregular (audio) \

Legal Definition of irregular

: not in accord with laws, rules, procedures, or established custom

Other Words from irregular

irregularly adverb

More from Merriam-Webster on irregular

Nglish: Translation of irregular for Spanish Speakers

Britannica English: Translation of irregular for Arabic Speakers

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