irregular

== English == === Etymology === From Middle English irreguler, from Old French irreguler, from Medieval Latin or Late Latin irrēgulāris, from in- + regularis, equivalent to ir- +‎ regular. === Pronunciation === (Received Pronunciation) IPA(key): /ɪˈɹɛɡ.jʊ.lə/ (General American) IPA(key): /ɪˈɹɛɡ.jə.lɚ/ (General Australian) IPA(key): /ɪˈɹeɡ.jə.lə/ === Adjective === irregular (comparative more irregular, superlative most irregular) Nonstandard; not conforming to rules or expectations. Rough (of a surface). Without symmetry, regularity, or uniformity. (geometry, of a polygon) Not regular; having sides that are not equal or angles that are not equal. (geometry, of a polyhedron) Whose faces are not all regular polygons (or are not equally inclined to each other). (grammar, of a word) Not following the regular or expected patterns of inflection in a given language. ==== Synonyms ==== (nonstandard): abnormal, singular; see also Thesaurus:strange (rough): coarse, salebrous; see also Thesaurus:rough (without uniformity): unstable, unsteady; see also Thesaurus:unsteady (not following the regular patterns of inflection): heteroclite ==== Antonyms ==== regular ==== Derived terms ==== ==== Translations ==== === Noun === irregular (plural irregulars) A soldier who is not a member of an official military force and who may not use regular army tactics. One who does not regularly attend a venue. ==== Derived terms ==== Baker Street Irregular ==== Translations ==== == Catalan == === Etymology === Borrowed from Late Latin irrēgulāris. === Pronunciation === IPA(key): (Central) [i.rə.ɣuˈlar] IPA(key): (Balearic) [i.rə.ɣuˈla] IPA(key): (Valencia) [i.re.ɣuˈlaɾ] Rhymes: -aɾ === Adjective === irregular m or f (masculine and feminine plural irregulars) irregular Antonym: regular ==== Derived terms ==== irregularment ==== Related terms ==== irregularitat === Further reading === “irregular”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007 “irregular”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026 “irregular” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua. “irregular” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962. == Galician == === Etymology === Attested since circa 1300. Borrowed from Late Latin irrēgulāris. === Pronunciation === Rhymes: -aɾ Hyphenation: i‧rre‧gu‧lar === Adjective === irregular m or f (plural irregulares) irregular Antonym: regular ==== Related terms ==== irregularidade === References === Seoane, Ernesto Xosé González; Granja, María Álvarez de la; Agrelo, Ana Isabel Boullón (2006–2022), “yrregular”, in Dicionario de Dicionarios do galego medieval [Dictionary of dictionaries of Medieval Galician] (in Galician), Santiago de Compostela: Instituto da Lingua Galega Barreiro, Xavier Varela; Guinovart, Xavier Gómez (2006–2018), “irregular”, in Corpus Xelmírez: corpus lingüístico da Galicia medieval [Corpus Xelmírez: linguistic corpus of Medieval Galicia] (in Galician), Santiago de Compostela: Instituto da Lingua Galega Antón Luís Santamarina Fernández, editor (2006–2013), “irregular”, in Dicionario de Dicionarios da lingua galega [Dictionary of Dictionaries of the Galician language] (in Galician), Santiago de Compostela: Instituto da Lingua Galega Antón Luís Santamarina Fernández, Ernesto Xosé González Seoane, María Álvarez de la Granja, editors (2003–2018), “irregular”, in Tesouro informatizado da lingua galega (in Galician), Santiago de Compostela: Instituto da Lingua Galega === Further reading === “irregular”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2026 “irregular”, in Dicionário Estraviz de galego (in Galician), 2014–2026 == Portuguese == === Etymology === Borrowed from Late Latin irrēgulāris. === Pronunciation === === Adjective === irregular m or f (plural irregulares) irregular; nonstandard (grammar) irregular (not following an inflectional paradigm) ==== Antonyms ==== regular ==== Derived terms ==== irregularmente ==== Related terms ==== irregularidade === Further reading === “irregular”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026 == Spanish == === Etymology === Borrowed from Late Latin irrēgulāris. === Pronunciation === IPA(key): /ireɡuˈlaɾ/ [i.re.ɣ̞uˈlaɾ] Rhymes: -aɾ Syllabification: i‧rre‧gu‧lar === Adjective === irregular m or f (masculine and feminine plural irregulares) irregular, uneven, erratic, haphazard patchy, spotty, jagged, ragged fitful (grammar) (of a verb etc.) irregular Antonym: regular ==== Derived terms ==== ==== Related terms ==== === Further reading === “irregular”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025