Rodomontade n. Vain boasting; empty bluster or vaunting; rant. "I could show that the rodomontades of Almanzor are neither so irrational nor impossible."
... said to have been inflicted on each other was something so incredible that nothing but the solemn asseverations of the parties could have gained belief; and in those days Sheridan had not obtained that reputation for rodomontade which he afterwards ... — Reminiscences of Captain Gronow • Rees Howell Gronow