Torrential mountain streams; a torrential downpour.
When it is raining so hard you can't see out your car window even with the windshield wipers going, this is an example of a torrential rain.
When you are white water rafting and the river is flowing extremely fast and forcefully, this is an example of water that would be described as torrential.
Origin of torrential
- From torrent +"Ž -ial.