Blustering; exhibiting an insolent or affected manner of walking.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective, noun) (a. / n.) (adjective / noun)

Usage examples:

He darted after a swaggering figure.
- Erik Dorn by Ben Hecht
The first thing I heard when I got in from a professional call a little while ago was that Rickard was swaggering around town, saying that you wouldn't gather him in because you were afraid to.
- The Bells of San Juan by Jackson Gregory
But he was a man for whom I had a strong distrust, and that in spite of his swaggering airs and gallant speeches, fit to turn the head of some silly, vain girl who knew nothing of the world.
- Athelstane Ford by Allen Upward