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English definition of “business”

business

noun     /ˈbɪznɪs/
TRADE [U] A1 the buying and selling of goods or services : The shop closed last year , but now they're back in business. We do a lot of business with China . His company has gone out of business (= failed ).Business and commerce - general words
ORGANIZATION [C] A2 an organization that sells goods or services : My uncle runs a small decorating business.Businesses and enterprises
WORK [U] B1 work that you do to earn money : She's in Vienna on business (= working ).Jobs, careers and professionsWorking
a nasty/strange, etc business an unpleasant / strange , etc situation Situations and circumstances
be sb's (own) business to be something private that other people do not need to know : What he does in his own home is his business.Topics and areas of interestSecrecy and privacy
be none of sb's business B2 If something is none of someone's business, they do not need to know about it, although they want to, because it does not affect them.Topics and areas of interestSecrecy and privacy
mind your own business used to tell someone in a rude way that you do not want them to ask about something private → See also big business, show businessRude and cheekyRelating to sex and sexual desire
(Definition of business noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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