braggadocio [ˌbrægəˈdoʊʃiˌoʊ] n.
1.) A braggart.
2.) Empty or pretentious bragging.
3.) A swaggering, cocky manner (American Heritage Dictionary of the English Language).
Etymology: Alteration of Braggadocchio, the personification of vainglory in The Faerie Queene by Edmund Spenser, from brag.
"Mattie: It is the same idea as a coon hunt. You are just trying to make your work sound harder than it is. Here is the money. I aim to get Tom Chaney and if you are not game I will find somebody who is game. All I have heard out of you so far is talk. I know you can drink whiskey and snore and spit and wallow in filth and bemoan your station. The rest has been braggadocio. They told me you had grit and that is why I came to you. I am not paying for talk. I can get all the talk I need and more at the Monarch Boarding House" (True Grit, Joel Cohen and Ethan Cohen, 2010).
(Prinz Arthur und die Feenkönigin, Johann Heinrich Füssli, ~1788)