the.com/swagger

means To walk or carry yourself with a bold, exaggerated confidence that announces itself before you even speak.

from First struts into English in the late 1500s, built from 'swag' (to sway or lurch from side to side) plus the '-er' that turns a motion into a habitual action. Shakespeare himself helped popularize it — Puck uses it in A Midsummer Night's Dream to mock a group of actors strutting about full of themselves. The word has carried that whiff of theatrical self-importance ever since.