1 n balderdash, balls (taboo slang) bilge (informal) blather, bosh (informal) bull (slang) bullshit (taboo slang) bunkum or buncombe (chiefly U.S.) chatter, claptrap (informal) cobblers (Brit. taboo slang) crap (slang) drivel, eyewash (informal) foolish talk, gabble, garbage (informal) gobbledegook (informal) gossip, guff (slang) hogwash, hokum (slang, chiefly U.S. & Canad.) horsefeathers (U.S. slang) hot air (informal) inanity, moonshine, nonsense, pap, piffle (informal) poppycock (informal) rigmarole, rot, rubbish, shit (taboo slang) tattle, tommyrot, tosh (slang, chiefly Brit.) trash, tripe (informal) trumpery, verbiage, waffle (informal, chiefly Brit.)
2 vb blather, chatter, gabble, gossip, prattle, rattle on, talk nonsense, talk through one's hat, tattle, waffle (informal, chiefly Brit.)