noun
Word Origin early 16th century: perhaps from gibber1 (but recorded earlier) + the suffix -ish1 (denoting a language as in Spanish, Swedish, etc.).
Scrabble Points: 17
Powered by Oxford Dictionaries
More definitions, origin and scrabble points
Nonsensical language
Gibberish, also known as jibber-jabber or gobbledygook, is speech that is nonsense: ranging across speech sounds that are not actual words, pseudowords, language games and specialized jargon that seems nonsensical to outsiders. Wikipedia