drivel

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

absurdness, craziness, madness, senselessness, witlessness

monkey business, monkeyshine(s), shenanigan(s), tomfoolery

gas, hot air, rigmarole (also rigamarole)

double-talk, hocus-pocus

blah (also blah-blah), hocus-pocus, hokeypokey, twaddle

chatter, gab, patter, prate, tattle, twitter

cackle, clack, clatter

water

expectorate, spit

foam, froth, splutter

sputter

blabber, blather, bleat, blither, gab, jangle, jaw, patter, prate, rattle, run on, smatter, tittle-tattle, troll, yak (also yack)

maunder, mouth, mumble, murmur, mutter

stammer, stutter

screech, shout, shriek