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English definition of “back sb/sth up”

back sb/sth up

phrasal verb with back     /bæk/ verb [T]
to provide support for someone or something: His warning of the need for good economic housekeeping was backed up by a record current account deficit of £72bn. She's backed up by a dedicated team of administrators .
(Definition of back sb/sth up from the Cambridge Business English Dictionary © Cambridge University Press)
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