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English definition of “effort”

effort

noun     /ˈefət/
ATTEMPT [C, U] B1 an attempt to do something: [+ to do sth] We huddled together in an effort to keep warm. He was making an effort to be sociable.Effort and expending energyTrying and making an effortTrying and making an effortEffort and expending energy
ENERGY [U] B1 the energy that you need to do something: I put a lot of effort into organizing the party. [+ to do sth] It would take too much effort to tidy my bedroom.Effort and expending energyTrying and making an effort
[U] the force that is used to make something movePhysics
be an effort to be difficult or painful: After his accident, walking was an effort.Effort and expending energyTrying and making an effortDifficult things and peoplePreventing and impedingPain and painful
(Definition of effort noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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