Bluster
Part of speech: verb
Definition: To speak or protest loudly. To blow in strong or sudden gusts.
Part of speech: noun
Definition: Pompous, officious talk. A gust of wind. Fitful noise and violence.
Bravado
Part of speech: noun
Definition: A swaggering show of defiance or courage.A false show of courage.
Example sentence: Christopher Reeve did such an amazing job that to give him some kind of accent or more bravado would have been wrong. Audiences wouldn't have responded to that either.