v.
 walk or behave arrogantly or self-importantly.
n.
 an arrogant or self-important gait or manner.
adj.
  - denoting a coat cut with a loose flare from the shoulders.
- Brit. informal, dated smart or fashionable.
Derivative
  
    - swaggerer n.
- swaggering adj.
- swaggeringly adv.
 
  Etymology
  C16: appar. a frequentative of the verb swag.