Boastful, blustering behaviour.
present participle of swagger
having or showing arrogant superiority to and disdain of those one views as unworthy
"some economists are disdainful of their colleagues in other social disciplines"
"haughty aristocrats"
"his lordly manners were offensive"
"walked with a prideful swagger"
"very sniffy about breaches of etiquette"
"his mother eyed my clothes with a supercilious air"
"a more swaggering mood than usual"
flamboyantly adventurous
Boastful, proud, self-confident.