bluster, bombast, brag, braggadocio, cockalorum, fanfaronade, gas, gasconade, grandiloquence, hot air, magniloquence, rant, rodomontade (also rhodomontade)

oratory, rhapsody, rhetoric

pomposity, turgidity, wind

bloviation, verbosity, windiness

babble, blab, chatter, drivel, gabble, gibber, gibberish, jabber, prattle

jawing, patter, prating, yammering

egotism, self-conceit, self-importance, swagger, vaunt

applesauce [slang], balderdash, baloney (also boloney), beans, bilge, blah (also blah-blah), blarney, blather, blatherskite, blither, bosh, bunk, bunkum (or buncombe), claptrap, codswallop [British], crapola [slang], crock, drivel, drool, fiddle, fiddle-faddle, fiddlesticks, flannel [British], flapdoodle, folderol (also falderal), folly, foolishness, fudge, garbage, guff, hogwash, hokeypokey, hokum, hoodoo, hooey, horsefeathers [slang], humbug, humbuggery, jazz, malarkey (also malarky), moonshine, muck, nerts [slang], nonsense, nuts, piffle, poppycock, punk, rot, rubbish, senselessness, silliness, slush, stupidity, taradiddle (or tarradiddle), tommyrot, tosh, trash, trumpery, twaddle

absurdity, asininity, fatuity, foolery, idiocy, imbecility, inaneness, inanity, insanity, kookiness, lunacy

absurdness, craziness, madness, witlessness

hoity-toity, monkey business, monkeyshine(s), shenanigan(s), tomfoolery

gas, hot air, rigmarole (also rigamarole)

double-talk, greek, hocus-pocus

levelheadedness, rationality, reasonability, reasonableness, sensibleness

common sense, horse sense, sense

discernment, judgment (or judgement), wisdom