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English definition of “butter sb up”

butter sb up

informal phrasal verb with butter
 
 
/ˈbʌtər/ verb [T]
to be very nice to someone so that they will do what you want them to doPraising insincerely or too eagerlyUrging and persuadingCausing somebody to act
(Definition of butter sb up from the Cambridge Learners Dictionary © Cambridge University Press)
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