something additional of the same kind; he always carried extras in case of an emergency

[ Syn: extra ]

a copy that corresponds to an original exactly; he made a duplicate for the files

[ Syn: duplication ]

identically copied from an original; a duplicate key'

being two identical

[ Syn: matching , twin , twinned ]

make or do or perform again; He could never replicate his brilliant performance of the magic trick

[ Syn: reduplicate , double , repeat , replicate ]

duplicate or match; The polished surface twinned his face and chest in reverse

[ Syn: twin , parallel ]

make a duplicate or duplicates of; Could you please duplicate this letter for me?'

increase twofold; The population doubled within 50 years

[ Syn: double ]