THESAURUS
Vapor
Barnumize, London fog, London special, Old Faithful, air, airy nothing, apparition, autism, babble, blabber, blather, blow, bluff, bluster, bluster and bluff, boast, boiling water, bombast, bounce, brag, brainchild, breathe out, bubble, bull, bullshit, bully, chimera, cloud, daydream, deception, delirium, deluded belief, delusion, depression, dereism, distemper, draw the longbow, dream, dream vision, dreamland, dreamworld, drisk, drivel, drizzling mist, drool, eidolon, emit, ether, evacuate, exhalation, exhale, exhaust, expire, false belief, fancy, fantasque, fantasy, fiction, figment, film, flourish, fog, frost smoke, fume, gabble, gas, gasconade, gauze, geyser, gibber, gibble-gabble, give off, give out, give vent to, hallucination, haze, hector, hot spring, hot water, hypochondria, hysteria, idle fancy, ignis fatuus, illusion, imagery, imagination, imagining, inflate, insubstantial image, intimidate, invention, jabber, lay it on, let out, maggot, make-believe, misbelief, misconception, mist, morbidity, myth, nervousness, open the floodgates, open the sluices, out-herod Herod, pea soup, pea-soup fog, peasouper, phantasm, phantom, piffle, pile it on, pipe dream, pontificate, prate, prattle, puff, rage, rant, rattle, rave, reek, rheuminess, roister, rollick, romance, self-deceit, self-deception, self-delusion, shadow, sick fancy, slang, smog, smoke, speak for Buncombe, spirit, splutter, sputter, steam, storm, swagger, swashbuckle, talk big, talk highfalutin, talk nonsense, the pip, thermae, thick-coming fancies, thin air, throw off, trick, trip, twaddle, twattle, vaunt, vision, waffle, whim, whimsy, wildest dreams, wrong impression
ROGET THESAURUS
Vapor
Unsubstantiality
N
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.
Boasting
VB
boast, make a boast of, brag, vaunt, Puff, show off, flourish, crake, crack, trumpet, strut, swagger, vapor, blague, blow, four-flush, bluff, exult, crow, crow over, neigh, chuckle, triumph, throw up one's cap, talk big, se faire valoir, faire claquer son fouet, take merit to oneself, make a merit of, sing Io triumphe, holloa before one is out of the wood.
Insolence
VB
be insolent, bluster, vapor, swagger, swell, give oneself airs, snap one's fingers, kick up a dust, swear, rap out oaths, roister, arrogate, assume, presume, make bold, make free, take a liberty, give an inch and take an ell, domineer, bully, dictate, hector, lord it over, traiter de haut en bas, regarder de haut en bas, exact, snub, huff, beard, fly in the face of, put to the blush, bear down, beat down, browbeat, intimidate, trample down, tread down, trample under foot, dragoon, ride roughshod over, out face, outlook, outstare, outbrazen, outbrave, stare out of countenance, brazen out, lay down the law, teach one's grandmother to suck eggs, assume a lofty bearing, talk big, look big, put on big looks, act the grand seigneur, mount the high horse, ride the high horse, toss the head, carry, with a high hand, tempt Providence, want snuffing.
Gaseity
N
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
N
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.
Imagination
N
imagination, originality, invention, fancy, inspiration, verve, warm imagination, heated imagination, excited imagination, sanguine imagination, ardent imagination, fiery imagination, boiling imagination, wild imagination, bold imagination, daring imagination, playful imagination, lively imagination, fertile imagination, fancy, mind's eye, such stuff as dreams are made of, ideality, idealism, romanticism, utopianism, castle-building, dreaming, phrensy, frenzy, ecstasy, extasy, calenture, reverie, trance, day dream, golden dream, somnambulism, conception, Vorstellung, excogitation, a fine frenzy, cloudland, dreamland, flight of fancy, fumes of fancy, thick coming fancies, creation of the brain, coinage of the brain, imagery, conceit, maggot, figment, myth, dream, vision, shadow, chimera, phantasm, phantasy, fantasy, fancy, whim, whimsey, whimsy, vagary, rhapsody, romance, gest, geste, extravaganza, air drawn dagger, bugbear, nightmare, flying Dutchman, great sea serpent, man in the moon, castle in the air, pipe dream, pie-in-the-sky, chateau en Espagne, Utopia, Atlantis, happy valley, millennium, fairyland, land of Prester John, kindgom of Micomicon, work of fiction, Arabian nights, le pot au lait, dream of Alnashar, illusion, phantom, Fata Morgana, vapor, stretch of the imagination, mythogenesis, idealist, romanticist, visionary, mopus, romancer, dreamer, somnambulist, rhapsodist, castle-buildier, fanciful projector, imagined, ben trovato, air drawn, airbuilt, imagining, imaginative, original, inventive, creative, fertile, romantic, high flown, flighty, extravagant, fanatic, enthusiastic, unrealistic, Utopian, Quixotic, ideal, unreal, in the clouds, in nubibus, unsubsantial, illusory, fabulous, legendary, mythical, mythic, mythological, chimerical, imaginary, visionary, notional, fancy, fanciful, fantastic, fantastical, whimsical, fairy, fairy-like, gestic, a change came o'er the spirit of my dream, aegri somnia vana, dolphinum appingit sylvis in fluctibus aprum, fancy light from fancy caught, imagination rules the world, l'imagination gallope, le jugement ne va que le pas, musaeo contingens cuncta lepore, tous songes sont mensonges, Wahrheil und Dichtung, DIVISION II COMMUNICATION OF IDEAS.