[2] "Gibberish" is also used as an imprecation to denigrate or tar ideas or opinions the user disagrees with or finds irksome, a rough equivalent of "nonsense", "folderol", "balderdash", or "claptrap".
[4] It is generally thought to be an onomatopoeia imitative of speech, similar to the words jabber (to talk rapidly) and gibber (to speak inarticulately).
[7] Samuel Johnson, in A Dictionary of the English Language, published in 1755, wrote that the word gibberish "is probably derived from the chymical cant, and originally implied the jargon of Geber and his tribe."
The theory was that gibberish came from the name of a famous 8th century Muslim alchemist, Jābir ibn Hayyān, whose name was Latinized as Geber.
"[22][23] The term "gobbledygook" has a long history of use in politics to deride deliberately obscure statements and complicated but ineffective explanations.
[28] The Italian musical artist Adriano Celentano wrote and performed the song "Prisencolinensinainciusol" in gibberish as an intentional mimic of the sound of English to those who are not fluent in the language.