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castle in the air
01
a hope or wish that cannot be realized or fulfilled
What is the origin of the idiom "castle in the air" and when to use it?
The phrase "castle in the air" is an idiom that refers to a daydream or a fanciful and impractical idea or plan that is unlikely to be realized. The expression likely originated from the idea that castles, traditionally built on solid ground, cannot exist in the air or the sky, emphasizing the unrealistic nature of the described situation or aspiration.
Example
With all due respect sir, your plans are nothing but a castle in the air at this stage.
Building a successful career without any education or training is akin to constructing a castle in the sky.
His dream of becoming a billionaire without putting in any effort is nothing but a castle in the air.
She spent hours imagining a world where all her problems disappeared, but she knew it was just a castle in the air.
The idea of winning the lottery and retiring on a private island is a castle in the sky for most people.
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