- absurdity
- Aesopian language
- amphigory
- argot
- babble
- babblement
- Babel
- balderdash
- bibble-babble
- blabber
- blather
- bombast
- cant
- cipher
- claptrap
- code
- cryptogram
- dialect
- double Dutch
- double-talk
- drivel
- drool
- fiddledeedee
- flummery
- folderol
- fudge
- fustian
- gabble
- galimatias
- gammon
- garble
- gibber
- gibberish
- gibble-gabble
- gift of tongues
- glossolalia
- gobbledygook
- Greek
- hocus-pocus
- humbug
- idiom
- jabber
- jargon
- jumble
- language
- lexicon
- lingo
- mumbo jumbo
- mummery
- narrishkeit
- noise
- nonsense
- pack of nonsense
- palaver
- patois
- patter
- phraseology
- prate
- prattle
- rant
- rigamarole
- rigmarole
- rodomontade
- rubbish
- scatology
- scramble
- secret language
- skimble-skamble
- slang
- speech
- stuff and nonsense
- stultiloquence
- taboo language
- talk
- trumpery
- twaddle
- twattle
- twiddle-twaddle
- vaporing
- vernacular
- vocabulary
- vulgar language
- waffling