Bafflegab.

What a great word! Coined back in the early 50s by one Milton A. Smith, an assistant general counsel for the US Chamber of Commerce, it's meant to describe the sort of bureaucratic language that obscures any hope of understanding - or, as Smith himself put it...

"multiloquence characterized by consummate interfusion of circumlocution or periphrasis, inscrutability, and other familiar manifestations of abstruse expatiation commonly utilized for promulgations implementing Procrustean determinations by governmental bodies."

The word survived (I'll just have to take the surviving part on faith, never having run across it myself til now), according to Michael Quinion, writing at World Wide Words, due to its "plosive consonants."

But of course you could see that right away.

(Thanks, e.)