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EnglishEdit

NounEdit

castle in the air (plural castles in the air)

  1. (idiomatic) A visionary project or scheme; a daydream; an idle fancy; any plan, desire, or idea that is unlikely to be ever realized; a near impossibility.
    Synonyms: pipe dream

Usage notesEdit

  • Completing the metaphor, one is said to build a castle in the air.

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