Moderate as in daydream A fanciful or impractical idea or project, existing only in one's imagination or dreams. Clear All
2 Example Sentences Showcasing the Meaning of 'Castle In The Air'
As an aspiring artist, her dream of holding a solo exhibition was initially dismissed as a mere castle in the air.
The inventor spent years working on a groundbreaking idea, which some considered a mere castle in the air.
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