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English definition of “about”

about

adverb     /əˈbaʊt/
APPROXIMATELY A1 used before a number or amount to mean approximately: It happened about two months ago.Approximate
DIRECTION (also US around) B2 to or in different parts of a place, often without purpose or order: She's always leaving her clothes lying about.Approximate
NEAR informal (also US around) If someone or something is about, they are near to the place where you are now: Is Kate about?General location and orientation
be about to do sth B2 to be going to do something very soon: I stopped her just as she was about to leave.About to happenCloseness in distance and time
(Definition of about adverb from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “about” in other dictionaries

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