adulterated, aerial, aerodynamic, aerostatic, aery, air-built, airy, attenuate, attenuated, chimeric, chimerical, cloud-born, cloud-built, cloud-woven, cloudy, cut, dilute, diluted, dreamlike, ethereal, fanciful, fatuitous, fatuous, fine, flimsy, foggy, fuming, fumy, gaseous, gasified, gasiform, gaslike, gassy, gossamery, illusory, imaginary, insubstantial, mephitic, miasmal, miasmatic, miasmic, misty, mushy, oxyacetylene, oxygenous, ozonic, phantasmal, phantomlike, pneumatic, rare, rarefied, reeking, reeky, shadowy, slight, smoking, smoky, spirituous, steaming, steamy, subtile, subtle, tenuous, thin, thinned, thinned-out, uncompact, uncompressed, unreal, unsubstantial, vague, vaporing, vaporish, vaporlike, vapory, watered, watered-down, windy, wispy
gaseity, vaporousness, flatulence, flatulency, volatility, aeration, aerification, elastic fluid, gas, air, vapor, ether, steam, essence, fume, reek, effluvium, flatus, cloud, ammonia, ammoniacal gas, volatile alkali, vacuum, partial vacuum, pneumatics, pneumatostatics, aerostatics, aerodynamics, gasmeter, gasometer, air bladder, swimming bladder, sound, (of a fish), gaseous, aeriform, ethereal, aerial, airy, vaporous
, volatile, evaporable, flatulent.
bubble; cloud, bubble, foam, froth, head, spume, lather, suds, spray, surf, yeast, barm, spindrift, cloud, vapor, fog, mist, haze, steam, geyser, scud, messenger, rack, nimbus, cumulus, woolpack, cirrus, stratus, cirrostratus, cumulostratus, cirrocumulus, mackerel sky, mare's tale, dirty sky, curl cloud, frost smoke, thunderhead, nephelognosy, nephograph, nephology, effervescence, fermentation, bubbling, nebula, cloudliness, nebulosity, bubbling, frothy, nappy, effervescent, sparkling, mousseux, frothy, up, cloudy, thunderheaded, vaporous
, nebulous, overcast, the lowring element scowls o'er the darkened lands.
opacity, opaqueness, film, cloud, opaque, impervious to light, adiaphanous, dim, turbid, thick, muddy, opacous, obfuscated, fuliginous, cloud, hazy, misty, foggy, vaporous
, nubiferous, muggy, smoky, fumid, murky, dirty.
turbidity, cloudiness, fog, haze, muddiness, haziness, obscurity, nephelometer, turbid, thick, muddy, obfuscated, fuliginous, hazy, misty, foggy, vaporous
, nubiferous, cloudy (cloud), smoky, fumid, murky, dirty.