risk

danger, risk, hazard, menace, peril, threat

venture, chance, dare, hazard, risk

名词 risk:

1. a source of danger; a possibility of incurring loss or misfortune
   同义词：hazard, jeopardy, peril, endangerment
2. a venture undertaken without regard to possible loss or injury
   同义词：peril, danger
3. the probability of becoming infected given that exposure to an infectious agent has occurred
   同义词：risk of infection
4. the probability of being exposed to an infectious agent
   同义词：risk of exposure

动词 risk:

1. expose to a chance of loss or damage
   同义词：put on the line, lay on the line
2. take a risk in the hope of a favorable outcome
   同义词：gamble, chance, hazard, take chances, adventure, run a risk, take a chance

1. At the risk of sounding ungrateful, I must refuse your offer.
   我甘受拂逆盛情之嫌，也必须谢绝你的提议。
2. All the people who know this secret represent a security risk.
   凡是知道这个秘密的人都对安全造成危险。
3. He saved my life at the risk of his own.
   他冒着自己的生命危险救了我的命。
4. Anyone swimming in this lake does so at his own risk.
   任何人在此湖中冒险游泳，其后果自负。

risk

n.（名词）
The possibility of suffering harm or loss; danger.
危险，风险：遭受损害或损失的可能性；危险
A factor, thing, element, or course involving uncertain danger; a hazard:
危险：与某种不定的危险有关的因素，事物，成份或者所经之路；危险：
例句：
.the usual risks of the desert: rattlesnakes, the heat, and lack of water.(Frank Clancy)
.沙漠中常见的危险有：响尾蛇，酷热及缺水.(弗兰克·克兰西)

The danger or probability of loss to an insurer.
风险率：保险公司遭受损失的危险或可能性
The amount that an insurance company stands to lose.
保险金（额）：保险公司所要承受的损失金额

The variability of returns from an investment.
投资报酬的风险：某项投资返还的机率
The chance of nonpayment of a debt.
拒绝偿债的风险
One considered with respect to the possibility of loss:
风险承担人：
例句：
a poor risk.
不幸的风险承担人

n.attributive.（定语名词）
Often used to modify another noun:
常被用来修饰另一个名词：
例句：
risk factors; risk management.
危险因素；风险管理

v.tr.（及物动词）
risked,risk.ing,risks
To expose to a chance of loss or damage; hazard.
使…遭受危险：冒损失或损坏；使…冒危险
To incur the risk of:
冒…的危险：
例句：
His action risked a sharp reprisal.See Synonyms at endanger
他的行为冒着极可能遭到报复的危险参见 endanger

<习惯用语>at risk 或
at-risk
Being endangered, as from exposure to disease or from a lack of parental or familial guidance and proper health care:
处境危险，遭受危险：处于危险之中，如因疾病或缺少父母或家庭的教导及适当的医疗保健：
例句：
at risk youth in the inner cities; at-risk groups of children not having received the vaccine.
市中心贫民区遭受危险的青少年；没有种植牛痘疫苗的处境危险的孩子

来源：
French risque
法语 risque
from Italian risco, rischio
源自 意大利语 risco, rischio

【引伸】
risk.er
n.（名词）