Synonyms to air built

aerial, airy, chimeric, chimerical, cloud-born, cloud-built, cloud-woven, dreamlike, ethereal, fanciful, fatuitous, fatuous, gaseous, gossamery, illusory, imaginary, phantasmal, phantomlike, rarefied, shadowy, spirituous, subtile, subtle, tenuous, unreal, vaporous, vapory, windy