Swagger

v. i. [imp. & p. p. SWAGGERED; p. pr. & vb. n. SWAGGERING.] [Cf. A-S. swēgan, to make a noise, to rattle, swegian, to prevail.] To boast or brag noisily; to be ostentatiously proud; to bluster; to bully. What a pleasure it is to swagger at the bar! Arbuthnot. To be great is not to swagger at our footmen. Collier.

n. Boastfulness or insolence of manner.

He gave a half swagger, half leer, as he stepped forth to receive us. W. Irving.