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Synonyms

castle in the air

American  

noun

  1. a fanciful or impractical notion or hope; daydream.


castle in the air British  

noun

  1. a hope or desire unlikely to be realized; daydream

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of castle in the air

First recorded in 1570–80

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Fittingly for a boy in a centuries-old town in what was then Communist East Germany, his was no ordinary castle in the air.

From New York Times Oct. 7, 2014

His face and eyes shine as he hurries towards his doom, blinded by a beautiful delusion, his own personal castle in the air.

From The Guardian Sep. 16, 2010

“Now that castle in the air has a foundation underneath it and is becoming an impending reality.”

From Washington Post

What Lorabelle seeks is a castle in the air; what she finds in Henry is a way back to earth.

From Time Magazine Archive

I do talk about “after the war,” but it’s as if I were talking about a castle in the air, something that can never come true.

From "The Diary of a Young Girl" by Anne Frank

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