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English definition of “about”

about

  /əˈbɑʊt/ preposition
A1 relating to a particular subject: What was she talking about?
what/how about…? A2 used to suggest something: What about some lunch?
what/how about…? B1 used to ask for someone’s opinion on a particular subject: How about this restaurant? Is it good?
(Definition of about preposition from the Webster's Essential Mini Dictionary © Cambridge University Press)

Definitions of “about” in other dictionaries

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