du·pli·cate
ˈdü-pli-kət 
also ˈdyü-
1
: consisting of or existing in two corresponding or identical parts or examples
duplicate invoices
2
: being the same as another
duplicate copies
du·pli·cate
ˈdü-pli-ˌkāt
also ˈdyü-
duplicated; duplicating
1
: to make double or twofold
2
a
: to make a copy of
a cell duplicates itself when it divides
b
: to produce something equal to
trying to duplicate last year's success
c
: to do over or again often needlessly
duplicated effort
: to become duplicated
also
: repeat
du·pli·cate
ˈdü-pli-kət
also ˈdyü-
1
a
: either of two things exactly alike and usually produced at the same time or by the same process
b
: an additional copy of something (such as a book or stamp) already in a collection
2
: one that resembles or corresponds to another : counterpart
3
: two identical copies
—used in the phrase in duplicate
Synonyms
Adjective
Verb
Noun
Examples of duplicate in a Sentence
Adjective
I began receiving duplicate copies of the magazine every month.
I had a duplicate key made.
Verb
She duplicated the video to give to family and friends.
Unfortunately, the results of the first study could not be duplicated.
Noun
In case you lose your keys, keep a set of duplicates somewhere safe.
doll carriages that are duplicates of baby carriages
Recent Examples on the Web
Thomas G. Moukawsher, Newsweek, 5 Nov. 2024
Irregularities included voters registering the names of dead people and potentially hundreds of duplicate registrations.
—Maritza Dominguez, The Arizona Republic, 1 Nov. 2024
Josef Adalian, Vulture, 4 Nov. 2024
Of those, 20 cases were brought in 2024, with charges ranging from ineligible voting to false registrations, duplicate voting and ineligible voting.
—Gordon G. Chang, Newsweek, 31 Oct. 2024
Forbes, 5 Nov. 2024
In Siegel’s film, the citizens of a small town are replaced by cold alien duplicates, suggesting that even our neighbors could be the enemy.
—Richard Newby, The Hollywood Reporter, 23 Oct. 2024
See all Example Sentences for duplicate 
Examples are automatically compiled from online sources to
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Adjective
Twenty four percent were declined and are undergoing further review, of which a majority were duplicate registration requests.
—Thomas G. Moukawsher, Newsweek, 5 Nov. 2024
Irregularities included voters registering the names of dead people and potentially hundreds of duplicate registrations.
—Maritza Dominguez, The Arizona Republic, 1 Nov. 2024
Verb
The first generation of Marvel series for Disney+ essentially duplicated how the studio makes its films, with in-house producers in charge of calling the shots.
—Josef Adalian, Vulture, 4 Nov. 2024
Of those, 20 cases were brought in 2024, with charges ranging from ineligible voting to false registrations, duplicate voting and ineligible voting.
—Gordon G. Chang, Newsweek, 31 Oct. 2024
Noun
Integrating data from multiple sources—including ERP and CRM software—into centralized data lakes or warehouses and regularly cleaning it to remove inaccuracies, duplicates, and inconsistencies is also essential.
—Forbes, 5 Nov. 2024
In Siegel’s film, the citizens of a small town are replaced by cold alien duplicates, suggesting that even our neighbors could be the enemy.
—Richard Newby, The Hollywood Reporter, 23 Oct. 2024
See all Example Sentences for duplicate
Dictionary Entries Near duplicate
Cite this Entry
“Duplicate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplicate. Accessed 22 Nov. 2024.
Copy CitationKids Definition
duplicate
1 of 3 adjective
du·pli·cate
ˈd(y)ü-pli-kət
1
: having two parts exactly the same or alike
2
: being the same as another
duplicate
2 of 3 verb
du·pli·cate
ˈd(y)ü-pli-ˌkāt
duplicated; duplicating
1
: to make double
2
: to make a duplicate of
duplicate
3 of 3 nounˈd(y)ü-pli-kət
: a thing that is exactly like another
Medical Definition
duplicate
intransitive verb
du·pli·cate
ˈd(y)ü-pli-ˌkāt
duplicated; duplicating
: to become duplicate : replicate
DNA in chromosomes duplicates
Legal Definition
duplicate
1 of 2 transitive verb
du·pli·cate
ˈdü-pli-ˌkāt, ˈdyü-
duplicated; duplicating
: to make a duplicate of
duplicate
2 of 2 noun
du·pli·cate
ˈdü-pli-kət, ˈdyü-
: either of two things exactly alike and often produced at the same time
specifically
: a counterpart identified in the Federal Rules of Evidence Rule 1001 as produced by the same impression as the original or from the same matrix or by means of photography, mechanical, or electronic rerecording, chemical reproduction, or another technique which accurately reproduces the original compare original
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