noun
ruination
roo-ih-NAY-shun/ˌruːɪˈneɪʃn/
Complete destruction or spoiling of something.
The storm brings ruination to the farm, wrecking its barn and crops.

Etymology
Latin ruina pictured a collapse or tumbling down. Through ruinate, “to go to ruin,” that physical image became a name for complete destruction or downfall, including loss of prosperity.
In context
if your competitor is going to demolish you it's going to vanquish you he's gonna destroy you it's gonna lead you to your ruination
More examples
- Years of reckless borrowing led to the company's ruination.
- The scandal brought ruination to his political career.
- Salt water caused the ruination of the stored grain.
Forms
Similar words
- devastation
- Emphasizes widespread damage or the emotional shock it causes.
- obliteration
- Suggests destruction so complete that no recognizable trace remains.
- fiasco
- Describes an embarrassing failure, not necessarily lasting ruin.