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English definition of “risk”

risk

noun uk   /rɪsk/ us  
B2 [C or U] the possibility of something bad happening: In this business, the risks and the rewards are high. There's a high risk of another accident happening in this fog. [+ (that)] The risk (that) we might fail made us work twice as hard. [+ -ing verb] It's always a risk starting up a new business. The company is quite a good risk (= safe to lend money to). We want clean rivers and lakes, where you can swim without risk to your health. It's a low/high-risk strategy (= one that is safe/not safe). C1 [C] something bad that might happen: This wire is a safety/fire risk. His employers thought he was a security risk (= he might tell their secrets to a competitor). at risk B2 in a dangerous situation: All houses within 100 metres of the seas are at risk of flooding. at your own risk C2 used to mean that you are responsible for any damage, loss, or difficulty: Owners are reminded that they leave their cars here at their own risk. run/take a risk B2 to do something you know might be dangerous: Don't take any risks - just ring the police.

risk

verb [T] uk   /rɪsk/ us  
B2 to do something although there is a chance of a bad result: "It's dangerous to cross here." "I'll just have to risk it." [+ -ing verb] He risked losing his house when his company went bankrupt. B2 If you risk something important, you cause it to be in a dangerous situation where you might lose it: I'm not risking my life (informal neck) in that old car. He risked life and limb to get the cat down from the tree. She was prepared to risk everything on a last throw of the dice.
(Definition of risk from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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