duplicate
- An exact copy of something, especially a document. nounShe made a duplicate of the contract for her records.The museum displayed a duplicate of the ancient artifact.
- To make an exact copy of something. verbHe duplicated the key so he could have a spare.The software allows you to duplicate files easily.
- Exactly like something else, especially through having been copied. adjectiveThe duplicate keys were indistinguishable from the originals.They wore duplicate outfits to the party.