imaginary

im·a·gin·a·ry
I1M3A1G2I1N1A1R1Y4
UK/ɪˈmæd͡ʒɪnəɹi/UK/ɪˈmæd͡ʒɪnɹi/US/ɪˈmæd͡ʒɪˌn(ɛ)ɹi/

adjective

Existing only in the imagination.

“imaginary friend”

Similar
Less commonFirst used 16th c.Scrabble 15

Meanings

adjectiveimaginary (comparative more imaginary, superlative most imaginary)

comparative more imaginary · superlative most imaginary

  1. Existing only in the imagination.

    imaginary friend

    2 more examples

    Unicorns are imaginary.

    Wilt thou add to all the griefs I suffer / Imaginary ills and fancied tortures?

    1712 (date written), [Joseph] Addison, Cato, a Tragedy. […], London: […] J[acob] Tonson, […], published 1713, →OCLC, Act IV, scene i, page 45

    Synonyms: all in one's head

  2. Relating or belonging to the imagination.

    Fiction refers to imaginary stories.

    2003, Tom Conklin, Comprehension Cliffhanger Stories, page 31
  3. mathematicsHaving no real part; that part of a complex number which is a multiple of √(-1) (called imaginary unit).
nounimaginary (plural imaginaries)

plural imaginaries

  1. Imagination; fancy.First known use 16th c.

    By then too Mozart's opera, from Da Ponte's libretto, had made Figaro a stock character in the European imaginary and set the whole Continent whistling Mozartian airs and chuckling at Figaresque humour.

    2002, Colin Jones, The Great Nation, Penguin, published 2003, page 324
  2. countablemathematicsAn imaginary number.First known use 18th c.
  3. human sciencesThe set of values, institutions, laws, and symbols common to a particular social group and the corresponding society through which people imagine their social whole.First known use c. 1975

    The sensory media are sensuous materials which prolong our bodily life into the surrounding world, and hence the media are imaginaries. These perceptually penetrated materials are " imaginaries " because they operate here in our living body […].

    1978, John Derrickson McCurdy, Visionary Appropriation, page 145
    2 more examples

    For example, colonial motifs of many kinds became increasingly central to the British national imaginary from the mid-nineteenth century, while the imaginative significance of 'the soldier' has long been derived from, and helped to sustain, the linkage between national and military imaginaries.

    1994, Graham Dawson, Soldier Heroes: British Adventure, Empire, and the Imagining ..., page 51

    While Oil, its extraction, and the global petroculture and its role in transforming the planet's climate undoubtedly play a crucial role in the Antropocene imaginary — to the extent that petrofiction has been construed not just as a genre but as a periodizing gesture of "petromodernity" — it would hamper both the imagination and the root of petrofiction to restrict the range of this term to the encounter with fossil fuels within a carbon imaginary.

    2015, Adrian Daub, Elisabeth Krimmer, Goethe Yearbook 22, page 96

Synonyms & antonyms

adjectiveExisting only in the imagination.

Similar
all in one's head

More synonyms by meaning

adjectivenot based on fact; existing only in the imagination

noun(mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1

Similar
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinimāginārius“relating to images, fancied”
  2. Middle Englishymaginarie
  3. Englishimaginary

From Middle English ymaginarie, ymagynary, from Latin imāginārius (“relating to images, fancied”), from imāgō, equivalent to imagine + -ary. The mathematical sense derives from René Descartes's use (of the French imaginaire) in 1637, La Geometrie, to ridicule the notion of regarding non-real roots of polynomials as numbers. Although Descartes' usage was derogatory, the designation stuck even after the concept gained acceptance in the 18th century.

Full word history & related roots →

Translations

Afrikaans denkbeeldig, imaginêr
  • denkbeeldigexisting in the imagination
  • imaginêrexisting in the imagination
  • imaginêrnon-real part of a complex number
Ancient Greek φαντασιώδης
  • φαντασιώδης (phantasiṓdēs)existing in the imagination
Arabic خِيَّالِيّ
  • خِيَّالِيّ (ḵiyyāliyy)existing in the imagination
Basque irudikari
  • irudikarinon-real part of a complex number
Bengali কাল্পনিক
  • কাল্পনিক (kalponik)existing in the imagination
Bulgarian въобража́ем, изми́слен
  • въобража́ем (văobražáem)existing in the imagination
  • изми́слен (izmíslen)existing in the imagination
  • имагине́рен (imaginéren)non-real part of a complex number
Catalan imaginari
  • imaginariexisting in the imagination
Chinese Mandarin 幻想
  • 幻想 (huànxiǎng)existing in the imagination
Czech pomyslný, imaginární
  • pomyslnýexisting in the imagination
  • imaginárníexisting in the imagination
  • imaginárnínon-real part of a complex number
Danish imaginær, indbildt
  • imaginærexisting in the imagination
  • indbildtexisting in the imagination
Dutch denkbeeldig, ingebeeld
  • denkbeeldigexisting in the imagination
  • ingebeeldexisting in the imagination
  • imaginairnon-real part of a complex number
Esperanto imaga, imaginara
  • imagaexisting in the imagination
  • imaginaranon-real part of a complex number
Estonian imaginaarne
  • imaginaarneexisting in the imagination
Finnish imaginaari-, kuvitteellinen
  • imaginaari-existing in the imagination
  • kuvitteellinenexisting in the imagination
  • imaginaarinennon-real part of a complex number
  • imaginaari-non-real part of a complex number
French imaginaire
  • imaginaireexisting in the imagination
German eingebildet, imaginär
  • eingebildetexisting in the imagination
  • imaginärexisting in the imagination
  • imaginärnon-real part of a complex number
Greek φανταστικός, φανταστικός
  • φανταστικός (fantastikós)existing in the imagination
  • φανταστικός (fantastikós)non-real part of a complex number
Hawaiian moeā
  • moeāexisting in the imagination
Hebrew דִּמְיוֹנִי
  • דִּמְיוֹנִי (dimyoní)existing in the imagination
Hindi काल्पनिक
  • काल्पनिक (kālpanik)existing in the imagination
Hungarian képzeletbeli, imaginárius
  • képzeletbeliexisting in the imagination
  • imagináriusnon-real part of a complex number
  • képzetesnon-real part of a complex number
Icelandic ímyndaður
  • ímyndaðurexisting in the imagination
Indonesian khayalan, khayal
  • khayalanexisting in the imagination
  • khayalexisting in the imagination
  • imajinernon-real part of a complex number
Irish íomháineach, samhailteach
  • íomháineachexisting in the imagination
  • samhailteachexisting in the imagination
  • samhlaitheexisting in the imagination
  • samhlaitheachexisting in the imagination
  • taibhriúilexisting in the imagination
Italian immaginario
  • immaginarioexisting in the imagination
Japanese 架空の, 幻想的な
  • 架空の (kakū no)existing in the imagination
  • 幻想的な (gensōteki na)existing in the imagination
Korean 환상적, 가상적
  • 환상적 (hwansangjeok)existing in the imagination
  • 가상적 (gasangjeok)existing in the imagination
Latin imaginarius, phantasticus
  • imaginariusexisting in the imagination
  • phantasticusexisting in the imagination
Latvian iedomāts, imaginārs
  • iedomātsexisting in the imagination
  • imaginārsnon-real part of a complex number
Lithuanian įsivaizduojamas
  • įsivaizduojamasexisting in the imagination
Māori pohewa
  • pohewaexisting in the imagination
Norwegian Bokmål tenkt, imaginær
  • tenktexisting in the imagination
  • imaginærexisting in the imagination
  • innbiltexisting in the imagination
Persian خیالی
  • خیالی (xiyâli)existing in the imagination
Polish zmyślony, umowny
  • zmyślonyexisting in the imagination
  • umownyexisting in the imagination
  • imaginacyjnyexisting in the imagination
  • urojonanon-real part of a complex number
Portuguese imaginário, imaginário
  • imaginárioexisting in the imagination
  • imaginárionon-real part of a complex number
Romanian imaginar, închipuit
  • imaginarexisting in the imagination
  • închipuitexisting in the imagination
Russian вообража́емый, мни́мый
  • вообража́емый (voobražájemyj)existing in the imagination
  • мни́мый (mnímyj)existing in the imagination
  • вы́мышленный (výmyšlennyj)existing in the imagination
  • вы́думанный (výdumannyj)existing in the imagination
  • мни́мый (mnímyj)non-real part of a complex number
Scottish Gaelic mac-meanmnach
  • mac-meanmnachexisting in the imagination
Slovak pomyselný, imaginárny
  • pomyselnýexisting in the imagination
  • imaginárnyexisting in the imagination
Spanish imaginario, imaginario
  • imaginarioexisting in the imagination
  • imaginarionon-real part of a complex number
Swahili -a kubuni
  • -a kubuniexisting in the imagination
Swedish imaginär, inbillad
  • imaginärexisting in the imagination
  • inbilladexisting in the imagination
  • imaginärnon-real part of a complex number
Tamil கற்பனையனான, கற்பனையானது
  • கற்பனையனான (kaṟpaṉaiyaṉāṉa)existing in the imagination
  • கற்பனையானது (kaṟpaṉaiyāṉatu)existing in the imagination
  • கற்பனை (kaṟpaṉai)non-real part of a complex number
Thai จินตภาพ
  • จินตภาพ (jin-dtà-pâap)existing in the imagination
Turkish sanal, hayalî
  • sanalexisting in the imagination
  • hayalîexisting in the imagination
Ukrainian уя́вний, ви́гаданий
  • уя́вний (ujávnyj)existing in the imagination
  • ви́гаданий (výhadanyj)existing in the imagination
Welsh dychmygol
  • dychmygolexisting in the imagination
Cite this entry
APA

imaginary. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/imaginary

MLA

“imaginary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/imaginary. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “imaginary,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/imaginary.

Source: imaginary on Wiktionary, CC BY-SA 4.0.