adulterated, aerial, aerodynamic, aerostatic, aery, air-built, airy, attenuate, attenuated, chimerical, cloud-built, cut, dilute, diluted, dreamlike, ethereal, fanciful, fatuitous, fatuous, fine, flimsy, fuming, fumy, gasified, gasiform, gaslike, gassy, gossamery, illusory, imaginary, insubstantial, mephitic, miasmal, miasmatic, miasmic, oxyacetylene, oxygenous, ozonic, phantomlike, pneumatic, rare, rarefied, reeking, reeky, shadowy, slight, smoking, smoky, spirituous, steaming, steamy, subtile, subtle, tenuous, thin, thinned-out, thinned, uncompact, uncompressed, unreal, unsubstantial, vaporing, vaporish, vaporlike, vaporous, vapory, watered-down, watered, windy