blus·ter 
(blŭstər)
(blŭstər)v. blus·tered, blus·ter·ing, blus·ters
v.intr.
1. To blow in loud, violent gusts, as the wind during a storm.
2.
a. To speak in a loudly arrogant or bullying manner.
b. To brag or make loud, empty threats.
v.tr.
To force or bully with swaggering threats.
n.
1. A violent, gusty wind.
2. Turbulence or noisy confusion.
3. Loud, arrogant speech, often full of empty threats.
[Middle English blusteren, from Middle Low German blüsteren.]
bluster·er n.
bluster·y, bluster·ous adj.