a. 1. Exhibiting noisy violence, as the wind; stormy; tumultuous. [ 1913 Webster ]
A tempest and a blustering day. Shak. [ 1913 Webster ]
2. Uttering noisy threats; noisy and swaggering; boisterous. “A blustering fellow.” L'Estrange. [ 1913 Webster ]
adv. In a blustering manner. [ 1913 Webster ]