castle in the air Synonyms

daydreaming reverie daydream revery oneirism air castle castle in Spain unreal hope impossible dreams golden dream airy hope wishful thinking false hope fantastic notion castles in the sky empty wish unrealistic goal empty promise fond illusion in zones in a zone daydreams delusive contentment unrealistic hope pipe dream jam tomorrow Xanadu chimaera chimera dream fancy fantasy hallucination illusion imagination imagining limbo mirage phantasm phantasy dreamscape pie in the sky flight of fancy bubble