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English definition of “cost”

cost

noun     /kɒst/
MONEY [C, U] A2 the amount of money that you need to buy or do something: The cruise ship was built at a cost of $400 million. Software is included at no extra cost. The cost of living (= the cost of food, clothes, etc) has increased.Costs and expenses
SOMETHING GIVEN [no plural] B2 something that you give or lose, in order to get or achieve something else: He rescued four people at the cost of his own life.Costs and expenses
at all costs B2 If something must be done at all costs, it is very important that it is done: We have to succeed at all costs.Very important or urgent
to your cost UK because of a bad experience you have had: An ankle injury can last a long time, as I know to my cost.Damaging and spoilingDestroying and demolishing
(Definition of cost noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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