1) Double-talk 2) Gibberish 3) Jabberwocky 
Onomatopoeic word (derived from the noise made by poultry) for incomprehensible or jargon-laden writing/language.
gobbledygook, gobbledegook 1. An English term used to describe nonsensical language, or sounds that resemble language but have no meaning; encrypted text. 2. Something that is being expressed in an overly complicated manner. 3. Unintelligible, inflated language; usually the hallmark of many government agencies. 4. Involved, pedantic, repetitious...
language characterized by circumlocution and jargon, usually hard to understand: the gobbledegook of government reports.