Synonyms for Bluster (same or very similar meaning)
WordNet sense 1 (vain and empty boasting):
braggadocio, rhodomontade, rodomontadeWordNet sense 2 (a swaggering show of courage):
bravadoWordNet sense 3 (show off):
blow, boast, brag, gas, gasconade, swash, tout, vaunt, shoot a lineWordNet sense 4 (act in an arrogant, overly self-assured, or conceited manner):
swaggerFrom the ODE community, based on WordNetadd/edit