noun

1. A possible adverse event or outcome

2. The probability of a negative outcome to a decision or event.

   “2006, Trever Ramsey on BBC News website, Exercise 'cuts skin cancer risk' read at http//news.bbc.co.uk/1/hi/health/4764535.stm on 14 May 2006”

3. The magnitude of possible loss consequent to a decision or event.

Synonyms: danger, hazard, peril

verb

1. To incur risk of (something).

2. To incur risk of harming or jeopardizing.

3. To incur risk as a result of (doing something).