(uncountable) The probability of a negative outcome to a decision or event.

(uncountable) The magnitude of possible loss consequent to a decision or event.

(uncountable, economics, business and engineering) The potential negative effect of an event, determined by multiplying the likelihood of the event occurring with its magnitude should it occur.

(countable) A possible adverse event or outcome, often covered under an insurance policy.

(countable) A noun "risk" represents a thing that has the potential to cause harm or adverse effects, such as a borrower, a financial product, or an insured entity.

(transitive) To incur risk of (an unwanted or negative outcome).

(transitive) To incur risk of harming or jeopardizing.

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