[roar.ing] adj (14c) 1: making or characterized by a sound resembling a roar: loud "~ applause"
2: marked by prosperity esp. of a temporary nature: booming
3: intense, utter "in the ~ heat" "a ~ success" -- roar.ing.ly adv
[2]roaring adv (1697): extremely "was ~ hungry --Herman Wouk" [3]roaring n (1823): noisy inhalation in a horse caused by nerve paralysis and muscular atrophy and constituting an unsoundness