torrential
adjective
tor·ren·tial tȯ-ˈren(t)-shəl 
tə-
1
a
: relating to or having the character of a torrent
torrential rains
b
: caused by or resulting from action of rapid streams
torrential gravel
2
: resembling a torrent in violence or rapidity of flow
torrentially
tȯ-ˈren(t)-sh(ə-)lē
adverb tə-
Example Sentences
The rain caused torrential flooding.
Recent Examples on the Web State media said China's 12th cyclone of the year was expected to make landfall between the cities of Wenling and Zhoushan, bringing torrential rains on its sweep through eastern and southern coastal areas. 
Reuters, CNN, 13 Sep. 2022 Streets are closed regularly in Charleston, S.C., as torrential rains wallop the city. Chris Morris, Fortune, 7 Sep. 2022 Officials in Indiana believe a woman was killed when torrential rains swept away her home. CBS News, 5 Sep. 2022 More than 150,000 Jackson, Mississippi residents are nearing one week without access to clean tap water after torrential rains overwhelmed the city’s main treatment plant. ABC News, 4 Sep. 2022 The torrential rains and subsequent flash floods caused massive damage to infrastructure, roads, electricity and communications networks. Zarar Khan, ajc, 3 Sep. 2022 The torrential rains and subsequent flash floods caused massive damage to infrastructure, roads, electricity and communications networks. Zarar Khan, BostonGlobe.com, 3 Sep. 2022 Almost 1 million homes have been destroyed or damaged in torrential monsoon rains since mid-June, with the southern province of Sindh hit hardest. Saeed Shah, WSJ, 29 Aug. 2022 Flooding at the Peach Tree Village nursing home in Brandon, Miss., following a morning of torrential rains Aug. 24, 2022. Marlene Lenthang, NBC News, 29 Aug. 2022 See More
Reuters, CNN, 13 Sep. 2022 Streets are closed regularly in Charleston, S.C., as torrential rains wallop the city. Chris Morris, Fortune, 7 Sep. 2022 Officials in Indiana believe a woman was killed when torrential rains swept away her home. CBS News, 5 Sep. 2022 More than 150,000 Jackson, Mississippi residents are nearing one week without access to clean tap water after torrential rains overwhelmed the city’s main treatment plant. ABC News, 4 Sep. 2022 The torrential rains and subsequent flash floods caused massive damage to infrastructure, roads, electricity and communications networks. Zarar Khan, ajc, 3 Sep. 2022 The torrential rains and subsequent flash floods caused massive damage to infrastructure, roads, electricity and communications networks. Zarar Khan, BostonGlobe.com, 3 Sep. 2022 Almost 1 million homes have been destroyed or damaged in torrential monsoon rains since mid-June, with the southern province of Sindh hit hardest. Saeed Shah, WSJ, 29 Aug. 2022 Flooding at the Peach Tree Village nursing home in Brandon, Miss., following a morning of torrential rains Aug. 24, 2022. Marlene Lenthang, NBC News, 29 Aug. 2022 See More Word History
Etymology
torrent entry 1 + -ial
First Known Use
1849, in the meaning defined at sense 1a