bravado

Bravado ultimately traces to the Old Italian adjective bravo, meaning "courageous" or "wild." Nowadays, the wildness once associated with bravado has been tamed to an overbearing boldness that comes from arrogance or a position of power. Celebrities, political or corporate giants, and the schoolyard bully may all show bravado (though they often turn out to be not so tough after all). Bravado is also used for show-offish, daring acts that seem reckless and inconsistent with good sense, but might, nonetheless, be applauded with shouts of Bravo! when successful. The spectacular feats of stuntmen come to mind, for example.