castle in the air

English · Thesaurus

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

castle in the air

  • /ˈkɑːs(ə)l ɪn ðiː ˈɛə/ UK
  • /ˈkæs(ə)l ɪn ði ˈɛəɹ/ US

noun castles in the air

  1. idiomatic A desire, idea, or plan that is unlikely to ever be realized; a visionary project or scheme; a daydream, an idle fancy, a near impossibility. Many times ſuch men when they come to themſelves, tell ſtrange things of Heauen and Hell, what viſions they haue ſeene; […] The like effects almost are to bee ſeene in ſuch as are awake: How many Chimæras, Anticks, golden mountaines, and Caſtles in the Aire doe they build vnto themſelves?

    Similar: air castle, castles in Spain, castle in the skies, eggs in moonshine, jam tomorrow, pie in the sky, pipe dream · Opposite: terra firma, on solid ground

Translations

Every language

noun desire, idea, or plan unlikely to ever be realized

Españolcastillos en el aire, castillos de naipes
中文空中樓閣 /空中楼阁 kōngzhōnglóugé
Portuguêscastelo de vento, castelo no ar
Françaischâteaux en Espagne
DeutschLuftschloss, Traumschloss
Русскийвозду́шный за́мок vozdúšnyj zámok
עבריתמִגְדָּל פּוֹרֵחַ בָּאֲוִיר migdál poréaḥ baAvír

Talk about this word

Cite this
MLA

"castle in the air." Wiktionary, via Micwyn, micwyn.com/word/castle%20in%20the%20air. Accessed 7 Nov. 2026.

APA

castle in the air. (n.d.). In Wiktionary, via Micwyn. Retrieved November 7, 2026, from https://micwyn.com/word/castle%20in%20the%20air

Chicago

"castle in the air." Wiktionary, via Micwyn. Accessed November 7, 2026. https://micwyn.com/word/castle%20in%20the%20air.

BibTeX
@misc{castle_in_the_air_2026,
  title = {castle in the air},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/castle%20in%20the%20air},
  urldate = {2026-11-07}
}