The Oxford Thesaurus An A-Z Dictionary of Synonyms - nonsensen.

1) rubbish, drivel, gibberish, gobbledegook or gobbledygook, twaddle, trash, babble, balderdash, moonshine, bombast, fustian, rodomontade, puffery, flummery, blather or blether, bunkum, poppycock, stuff and nonsense, double-talk, jargon, mumbo-jumbo, jabberwocky, cackle, gas, palaver, Colloq bunk, piffle, rot, bosh, eyewash, hogwash, malarkey, bilge (water) , boloney or baloney, claptrap, hot air, Brit tosh, Old-fashioned Brit gammon, waffle, US apple-sauce, horse feathers, garbage, bushwa; Slang crap, tripe, bull, hooey, double Dutch, Taboo slang bullshit, horseshit, Brit (a load of old) cobblers: Watson's speech on the benefits of tobacco was unmitigated nonsense. 2) mischief, clowning, antics, capering, horseplay, pranks, tricks, jokes, silliness, foolishness, inanity, frivolity, tomfoolery, joking, jesting, waggishness, buffoonery, shenanigans, Colloq monkey business, Brit monkey tricks, US monkeyshines: Keep up this nonsense and you'll get into a lot of trouble!