Adjectives

(a)torrentialrelating to or resulting from the action of a torrent“torrential erosion”, “torrential adaptations seen in some aquatic forms”
(s)torrentialresembling a torrent in force and abundance“torrential applause”, “torrential abuse”, “the torrential facility and fecundity characteristic of his style” (Winthrop Sargeant)
(s)torrentialpouring in abundance“torrential rains”