Elysian, Olympian, adulterated, aerial, aeriform, aerodynamic, aerostatic, aery, air-built, airish, airlike, airy, alfresco, altitudinous, ascending, asomatous, aspiring, astral, atmospheric, attenuate, attenuated, beatific, beatified, blessed, bodiless, boyish, breezy, bubbly, celestial, chimeric, chimerical, cloud-born, cloud-built, cloud-woven, colossal, cut, decarnate, decarnated, delicate, diaphanous, dilute, diluted, discarnate, disembodied, dominating, downy, dreamlike, ectoplasmic, elevated, eminent, empyreal, empyrean, etheric, exalted, exposed, extramundane, extraterrestrial, fanciful, fatuitous, fatuous, feathery, filmy, fine, fine-drawn, finespun, flimsy, fluffy, foamy, fragile, frail, from on high, frothy, fuming, fumy, gaseous, gasified, gasiform, gaslike, gassy, gauzy, ghostish, ghostlike, ghostly, ghosty, girlish, glorified, gossamer, gossamery, gracile, haughty, heavenly, high, high-pitched, high-reaching, high-set, high-up, illusory, imaginary, immaterial, impalpable, imponderable, imponderous, in glory, incorporate, incorporeal, insubstantial, intangible, lacy, leger, light, light as air, lighter than vanity, lofty, mephitic, miasmal, miasmatic, miasmic, misty, monumental, mounting, mousse, nonmaterial, nonphysical, occult, open-air, otherworldly, outtopping, overlooking, overtopping, oxyacetylene, oxygenous, ozonic, papery, paradisaic, paradisal, paradisiac, paradisic, phantasmal, phantasmic, phantom, phantomic, phantomlike, pneumatic, prominent, psychic, rare, rarefied, reeking, reeky, roomy, shadowy, slender, slenderish, slight, slight-made, slim, slimmish, slinky, small, smoking, smoky, soaring, souffle, specterlike, spectral, spiring, spiritual, spirituous, steaming, steamy, steep, sublime, subtile, subtle, superlative, supernal, supernatural, svelte, sylphlike, tenuous, thin, thin-bodied, thin-set, thin-spun, thinned, thinned-out, thinnish, threadlike, topless, toplofty, topping, towering, towery, transcendental, transmundane, tropospheric, uncompact, uncompressed, unearthly, unembodied, unextended, unfleshly, unheavy, unphysical, unreal, unsubstantial, unworldly, uplifted, upreared, vague, vaporing, vaporish, vaporlike, vaporous, vapory, volatile, wasp-waisted, watered, watered-down, watery, weak, weightless, willowy, windy, wiredrawn, wispy, wraithlike, wraithy, yeasty
unsubstantiality, insubstantiality, nothingness, nihility, no degree, no part, no quantity, no thing, nothing, naught, nil, nullity, zero, cipher, no one, nobody, never a one, ne'er a one, no such thing, none in the world, nothing whatever, nothing at all, nothing on earth, not a particle, all talk, moonshine, stuff and nonsense, matter of no importance, matter of no consequence, thing of naught, man of straw, John Doe and Richard Roe, faggot voter, nominis umbra, nonentity, flash in the pan, vox et praeterea nihil, shadow, phantom, dream, ignis fatuus, such stuff as dreams are made of, air, thin air, vapor, bubble, baseless fabric of a vision, mockery, hollowness, blank, void, inanity, fool's paradise, unsubstantial, baseless, groundless, ungrounded, without foundation, having no foundation, visionary, immaterial, spectral, dreamy, shadowy, ethereal
, airy, cloud built, cloud formed, gossamery, illusory, insubstantial, unreal, vacant, vacuous, empty, eviscerated, blank, hollow, nominal, null, inane, there's nothing in it, an ocean of dreams without a sound.
levity, lightness, imponderability, buoyancy, volatility, feather, dust, mote, down, thistle, down, flue, cobweb, gossamer, straw, cork, bubble, balloon, float, buoy, ether, air, leaven, ferment, barm, yeast, lighter-than-air balloon, helium balloon, hydrogen balloon, hot air balloon, convection, thermal draft, thermal, light, subtile, airy, imponderous, imponderable, astatic, weightless, ethereal
, sublimated, gossamery, suberose, suberous, uncompressed, volatile, buoyant, floating, portable, light as a feather, light as a thistle, light as air, lighter than air, rise like a balloon, float like a balloon.
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.