Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| balderdash | nonsense, drivel. |
| baloney | deceptive talk, nonsense; Bologna sausage. |
| betise | (Fr.) stupidity, a stupid act. |
| blague | (Fr.) humbug; pretentious nonsense. |
| blatherskite | (Scots) a garrulous talker of nonsense. |
| blathering | the act of talking nonsense. |
| bletheranskate | (Scots) a garrulous talker of nonsense. |
| bletherskate | (Scots) a garrulous talker of nonsense. |
| boloney | deceptive talk, nonsense; Bologna sausage. |
| borak | (Aborig.) nonsense, banter. |
| bosh | (Coll.) meaningless talk. |
| bulldust | a euphemism for bullshit. |
| bullshit | (Sl.) nonsense; (verb) to talk nonsense. |
| bullshitter | one who bullshits. |
| buncombe | insincere or foolish talk, nonsense. |
| bunkum | insincere or foolish talk, nonsense. |
| bushwa | nonsense. |
| bushwah | nonsense. |
| clamjamfry | (Scots) rubbish, nonsense. |
| clamjamphrie | (Scots) rubbish, nonsense. |
| clanjamfray | (Scots) rubbish, nonsense. |
| claptrap | nonsense, humbug. |
| claptrappery | nonsense, claptrap. |
| cockamamie | ridiculous, incredible. |
| cockamamy | ridiculous, incredible. |
| codswallop | something utterly senseless; nonsense. |
| crapola | (Coll.) rubbish, nonsense. |
| drivel | to talk nonsense. |
| eyewash | (Coll.) nonsense. |
| falderal | nonsense; a meaningless refrain of a song; (verb) to sing meaningless songs. |
| falderol | nonsense; a meaningless refrain of a song. |
| flapdoodle | gross flattery; nonsense. |
| flubdub | (US) pretentious nonsense. |
| folderol | nonsense; a meaningless refrain of a song. |
| galimatias | (Fr.) nonsensical talk; gibberish; gobbledygook. |
| gibberish | rapid, gabbling talk; meaningless words. |
| greek | something unintelligible. |
| greeked | with text represented as grey lines on a computer screen. |
| guff | nonsense, humbug. |
| haver | to talk nonsense. |
| hogwash | nonsense, worthless stuff. |
| hokum | nonsense. |
| hooey | nonsense. |
| jabberwock | nonsense, gibberish. |
| jabberwocky | nonsense, gibberish. |
| kidstakes | (Aust. coll.) nonsense, humbug. |
| malarkey | (US coll.) absurd talk, nonsense. |
| malarky | (US coll.) absurd talk, nonsense. |
| mullarky | (US coll.) absurd talk, nonsense. |
| nonsense | behavior or language that is meaningless or absurd. |
| nonsensical | relating to nonsense. |
| nonsensicality | the state of being nonsensical. |
| nonsensically | (Adv.) NONSENSICAL, relating to nonsense. |
| nonsensicalness | the state of being nonsensical. |
| poppycock | (Dutch) nonsense. |
| rigamarole | a succession of incoherent statements. |
| rigmarole | a succession of incoherent statements. |
| runcible | a nonsense word applied by Edward Lear to a spoon. |
| squit | (Sl.) a contemptible person, nonsense. |
| taradiddle | a fib; a piece of pretentious nonsense. |
| tarradiddle | a fib; a piece of pretentious nonsense. |
| tommyrot | nonsense. |
| tosh | (Sl.) nonsense (verb) to trim |
| toshy | nonsensical. |
| trumpery | worthless nonsense; trivial or useless articles, junk. |