Synonyms of castle in the air

7 similar words · 2 opposite words

Another word for castle in the air is air castle. Other synonyms of castle in the air are castles in Spain, castle in the skies, eggs in moonshine, jam tomorrow and pie in the sky.

Synonyms and similar words for castle in the air

air castleSynonym of castle in the air.
castles in SpainSynonym of castle in the air.
castle in the skiesSynonym of castle in the air.
eggs in moonshineA fanciful notion; an unrealistic or ludicrous concept.
jam tomorrow
pie in the skyA fanciful notion; an unrealistic or ludicrous concept; the illusory promise of a desired outcome that is unlikely to...
pipe dreamA desire or idea which is unlikely to materialize, or a plan which is unlikely to work; a near impossibility.

noun 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.

What is another word for castle in the air?: Castle in the air has 7 synonyms on Word.ws, such as air castle, castles in Spain, castle in the skies, eggs in moonshine, jam tomorrow, pie in the sky and pipe dream.
What is the opposite of castle in the air?: The opposite of castle in the air is terra firma. Other antonyms of castle in the air are on solid ground.
What does castle in the air mean?: Castle in the air means 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.

Adapted from Wiktionary: castle in the air (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Synonyms of castle in the air.” Word.ws, https://word.ws/synonyms/castle_in_the_air. Based on Wiktionary, CC BY-SA 4.0.