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English definition of “risk”

risk

noun [C/U]  /rɪsk/ us  
danger, or the possibility of danger, defeat, or loss: [C] There’s a risk of an accident happening in this fog. [C] I was afraid to take the risk of quitting my job before I had another one lined up. [U] We want clean rivers and lakes, where you can swim without risk to your health. [U] It was a high/low risk situation (= a situation with a lot of/very little danger). A risk is also someone or something that could cause a problem or loss: [C] Teenage drivers are considered higher risks. at risk To be at risk is to be in danger: A child who hasn’t been vaccinated is at risk.
risky
adjective  /ˈrɪs·ki/ us  
The business investment was a risky proposition.

risk

verb [T]  /rɪsk/ us  
to do something or to enter a situation where there is a possibility of being hurt or of a loss or defeat: He risked his life helping another man escape the fire. We risk losing the business if we don’t pay off the loan on time.
(Definition of risk from the Cambridge Academic Content Dictionary © Cambridge University Press)
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