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English definition of “smart”

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smart

adjective uk   /smɑːt/ us    /smɑːrt/

smart adjective (STYLISH)

B1 mainly UK having a clean, tidy, and stylish appearance: Guy looks very smart in his new suit, doesn't he? I need a smart jacket for my interview. She works in a very smart new office overlooking the river.B1 mainly UK A place or event that is smart attracts fashionable, stylish, or rich people: a smart restaurant We went to a very smart party on New Year's Eve.
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smart adjective (CLEVER)

B1 mainly US intelligent, or able to think quickly or cleverly in difficult situations: Gemma's teacher says she's one of the smartest kids in the class. Why don't you fix it if you're so smart? I'm not smart enough to understand computers. He's smart enough to know he can't run the business without her. Quitting that job was the smartest move I ever made.
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smart adjective (QUICK)

[before noun] done quickly with a lot of force or effort: She gave him a smart smack on the bottom. We'll have to work at a smart pace if we're going to finish on time.

smart adjective (WORKING BY COMPUTER)

C1 A smart machine, weapon, etc. uses computers to make it work so that it is able to act in an independent way: Until the advent of smart weapons, repeated attacks were needed to ensure the destruction of targets.
smartness
noun [U] uk   /ˈsmɑːt.nəs/ us    /ˈsmɑːrt-/ UK

smart

verb [I] uk   /smɑːt/ us    /smɑːrt/
to hurt with a sharp pain: My eyes were smarting from the onions. to feel upset and angry because of failure or criticism: The police are still smarting from their failure to prevent the robbery.
(Definition of smart from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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