Synonyms to double Dutch

argot, Aesopian language, Babel, Greek, babble, cant, cipher, code, cryptogram, garble, gibberish, gift of tongues, glossolalia, gobbledygook, jargon, jumble, lingo, mumbo jumbo, noise, patois, patter, phraseology, scatology, scramble, secret language, slang, taboo language, vernacular, vocabulary, vulgar language, absurdity, amphigory, babblement, baffle, balderdash, bavardage, be Greek to, be beyond one, be indiscreet, be insane, be too deep, be unguarded, beat one, betray, betray a confidence, bibble-babble, blab, blabber, blah-blah, blather, blether, blethers, blurt, blurt out, bombast, bubble, bull, bullshit, burble, cackle, caquet, caqueterie, chat, chatter, chattering, chitchat, chitter-chatter, clack, claptrap, clatter, disclose, dither, divulge, dote, double-talk, drivel, drool, escape one, fiddle-faddle, fiddledeedee, flummery, folderol, fudge, fustian, gab, gabble, galimatias, gammon, gas, gibber, gibble-gabble, give away, go on, gossip,