·adj Vehement; excessive.
II. Boisterous ·adj Rough or rude; unbending; unyielding; strong; powerful.
III. Boisterous ·adj Noisy; rough; turbulent; as, boisterous mirth; boisterous behavior.
IV. Boisterous ·adj Exhibiting tumultuous violence and fury; acting with noisy turbulence; violent; rough; stormy.