If you swagger, you walk in a very proud, confident way, holding your body upright and swinging your hips. A broad shouldered man wearing a dinner jacket swaggered confidently up to the bar John Steed was an arrogant, swaggering young man. Swagger is also a noun. He walked with something of a swagger. to walk proudly, swinging your shoulders in a way that shows you are very confident - used to show disapproval (Probably from swag (verb) ( SWAG) + -er (as in chatter)). a way of walking, talking, or behaving that shows you are very confident - used in order to show disapproval
act in an arrogant, overly self-assured, or conceited manner to walk with a lofty proud gait, often in an attempt to impress others; "He struts around like a rooster in a hen house