duplicate

/ˈdjuːplɪkət/

/ˈduːplɪkɪt/ adjective [before noun]

Definition

› made as an exact copy of something: duplicate copy/file/record We will not be able to return the documents, so keep a duplicate copy. duplicate invoice/statement/receipt

› done or made for a second time, especially when this is not necessary, or in order to deceive: duplicate payment/claim Internal controls are not in place to provide for the prevention of duplicate payments. Dishonest people filed duplicate claims or received rental assistance while living in government-paid housing.

(Definition of duplicate adjective from the Cambridge Business English Dictionary © Cambridge University Press)