adj
duplicate
JWPLIH-kuht
adj
1
Exactly the same as something else, especially because it was copied from it.
"He kept a duplicate key hidden under the mat."
verb
1
To make an exact copy of something.
"Please duplicate this form and send one copy to head office."
"Scientists tried to duplicate the results in a second experiment."
noun
1
An exact copy of something else.
"This ticket is a duplicate — the original is on file."
How to Use Duplicate
Learner’s notesIn plain EnglishTo copy something exactly, or an exact copy itself.
Common pairings
duplicate key
duplicate a document
exact duplicate
Word Forms
duplicated past tense, duplicates plural, duplicates singular
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Etymology
From Latin duplicatus, "doubled," the past participle of duplicare.