Rodomontade (n): boastful or inflated talk.
Bluster, braggadocio, orotundity, magniloquence.
Donald Trump, the embodiment of rodomontade, after a swing-and-miss flub on questions about the Middle East: “I’ll be so good at the military your head will spin.”
Hat tip: Christopher Gasper actually used ‘rodomontade‘ in a Boston Globe column about Rex Ryan. To the best of my recollection I’ve never heard this word before. English in inexhaustible.