Bloviate: intr.v. blo·vi·at·ed, blo·vi·at·ing, blo·vi·ates Slang
To discourse at length in a pompous or boastful manner: "the rural Babbitt who bloviates about 'progress' and 'growth'" (George Rebeck).
1857, American English, a Midwestern word for "to talk aimlessly and boastingly; to indulge in 'high falutin'," according to Farmer (1890), who seems to have been the only British lexicographer to notice it. He says it was based on blow (v.) on the model of deviate, etc. . .
. . . it enjoyed a revival early 1920s during the presidency of Warren G. Harding (Bloviation is a style of empty, pompous political speech particularly associated with Ohio due to the term's popularization by United States President Warren G. Harding, who described it as "the art of speaking for as long as the occasion warrants, and saying nothing"), who wrote a notoriously ornate and incomprehensible prose (e.e. cummings eulogized him as "The only man, woman or child who wrote a simple declarative sentence with seven grammatical errors") at which time the word took on its connection with political speech; it faded again thereafter, but, with its derivative, bloviation, it enjoyed a revival in the 2000 U.S. election season that continued through the era of blogging. (Dictionary.com)
Thanks to BookStooge for his spot-on usage of this sadly under-utilized word. I can think of several instances lately where it would have come in handy.