duplicate

1 of 3

adjective

du·​pli·​cate ˈdü-pli-kət How to pronounce duplicate (audio)
 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

duplicate

2 of 3

verb

du·​pli·​cate ˈdü-pli-ˌkāt How to pronounce duplicate (audio)
 also  ˈdyü-
duplicated; duplicating

transitive verb

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

intransitive verb

: to become duplicated
also : repeat
duplicative
ˈdü-pli-ˌkā-tiv How to pronounce duplicate (audio)
 also  ˈdyü-
adjective

duplicate

3 of 3

noun

du·​pli·​cate ˈdü-pli-kət How to pronounce duplicate (audio)
 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
Choose the Right Synonym for duplicate

reproduction, duplicate, copy, facsimile, replica mean a thing made to closely resemble another.

reproduction implies an exact or close imitation of an existing thing.

reproductions from the museum's furniture collection

duplicate implies a double or counterpart exactly corresponding to another thing.

a duplicate of a house key

copy applies especially to one of a number of things reproduced mechanically.

printed 1000 copies of the lithograph

facsimile suggests a close reproduction often of graphic matter that may differ in scale.

a facsimile of a rare book

replica implies the exact reproduction of a particular item in all details

a replica of the Mayflower

but not always in the same scale.

miniature replicas of classic cars

Example Sentences

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 See More
Recent Examples on the Web
Adjective
The confusion over duplicate tickets — 1,600 on Friday and 110 on Saturday — caused the concerts to be delayed, Billboard reported Monday. Los Angeles Times, 13 Dec. 2022 Often teams are being inundated with duplicate tickets that have the same root cause. Damian Ehrlicher, Forbes, 28 Apr. 2021 Adding a new team that had less experience on the Diablo series with few plans for managing the integration led to difficulties around duplicate work. Shannon Liao, Washington Post, 8 Dec. 2022 Between August 2012 and December 2018, McManus embezzled roughly $433,584 through wire transfers, duplicate paychecks and reimbursements for personal purchases to pay off his credit card expenses, according to federal authorities. Alison Cross, Hartford Courant, 3 Dec. 2022 Their methodology for compiling the estimate seeks to eliminate duplicate data points, Curran said. CBS News, 1 Dec. 2022 Roughly two-thirds of ballots being cast are marred by a printing error that requires election workers to hand-duplicate voters’ choices onto new ballots. oregonlive, 17 May 2022 Sometimes flight attendants will also move passengers so that families can sit together, or to resolve a seat duplicate situation. CNN, 23 Nov. 2022 Adkins said the archivists also clean up the microfilm during the digitization process, eliminating duplicate pages and reorienting upside-down pages. Bill Bowden, Arkansas Online, 20 Nov. 2022
Verb
Nothing can duplicate history, but with a martini in hand, the embrace of wood-paneling and a flickering fireplace feels mighty close. Los Angeles Times, 12 Jan. 2023 But in Brady’s case, the man who became a modern day Joe Montana at quarterback better not duplicate his idol in the broadcast booth or Fox has just flushed away a fortune. Tim Cowlishaw, Dallas News, 9 June 2022 Philadelphia should not expect Prescott to duplicate that performance. Dallas News, 23 Dec. 2022 The department of corrections noticed positive changes, and asked her to duplicate herself in 21 detention centers throughout Florida. Joseph Goodman | Jgoodman@al.com, al, 23 Sep. 2022 While a small number of laboratories claimed to reproduce the experiment, the major players in academia and industry could not duplicate it. Tim Fitzpatrick, The Salt Lake Tribune, 13 Dec. 2022 In this third act, those brave Ukrainians may not easily duplicate their amazing advances during the second. Josef Joffe, Time, 1 Dec. 2022 Getting closer to customers can lower shipping costs, but the strategy can also lead to duplicate costs, said Vishal Gaur, a logistics professor at Cornell University’s SC Johnson College of Business. Liz Young, WSJ, 8 Dec. 2022 Lensa is owned by Sunnyvale, Calif.-based Prisma Labs, which also makes the Prisma app that uses AI to duplicate photos in various artistic styles. Tatum Hunter, Washington Post, 4 Dec. 2022
Noun
There was a third check cashed by a woman for $4,700 that had never been written out by the Pepper Pike foundation, but somehow appeared to look like a duplicate of one of theirs. Thomas Jewell, cleveland, 24 Dec. 2022 If the seller posts a photo of what is supposed to be the actual item — a puppy, say, or a designer dress — save a duplicate of the image on your computer or smartphone, then upload it to a reverse image search site. Jon Healey, Chicago Tribune, 25 Nov. 2022 Sonali Prabhu, 25, got a pair of dupes — internet speak for a cheaper duplicate of a popular product — from Kohl’s for $50. Madison Malone Kircher, New York Times, 11 Oct. 2022 Sabrina Eaton writes that the report found that 59% of the Public Assistance Reporting Information System alerts of potential duplicate payments were improperly addressed. cleveland, 14 Dec. 2022 Juster then clarified the pixel was a duplicate that should have been removed in a tracking audit earlier this year. Katie Palmer, STAT, 13 Dec. 2022 Roberto Oliveras, an officer at the Osborn Correctional Institution, was cited by DOC investigators for booking duplicate stays at hotels in Windsor, Rocky Hill, Glastonbury and the Hyatt Place Mohegan Sun in Uncasville. Hartford Courant, 6 Dec. 2022 If the seller posts a photo of what is supposed to be the actual item — a puppy, say, or a designer dress — save a duplicate of the image on your computer or smartphone, then upload it to a reverse image search site. Jon Healey, Chicago Tribune, 25 Nov. 2022 If the seller posts a photo of what is supposed to be the actual item — a puppy, say, or a designer dress — save a duplicate of the image on your computer or smartphone, then upload it to a reverse image search site. Jon Healey, Los Angeles Times, 22 Nov. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'duplicate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

Adjective

Middle English, from Latin duplicatus, past participle of duplicare to double, from duplic-, duplex

First Known Use

Adjective

15th century, in the meaning defined at sense 1

Verb

15th century, in the meaning defined at transitive sense 1

Noun

1532, in the meaning defined at sense 1a

Time Traveler
The first known use of duplicate was in the 15th century

Dictionary Entries Near duplicate

Cite this Entry

“Duplicate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplicate. Accessed 31 Jan. 2023.

Kids Definition

duplicate

1 of 3 adjective
du·​pli·​cate ˈd(y)ü-pli-kət How to pronounce duplicate (audio)
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 How to pronounce duplicate (audio)
duplicated; duplicating
1
: to make double
2
: to make a duplicate of
duplicative adjective

duplicate

3 of 3 noun
ˈd(y)ü-pli-kət
: a thing that is exactly like another

Medical Definition

duplicate

intransitive verb
du·​pli·​cate ˈd(y)ü-pli-ˌkāt How to pronounce duplicate (audio)
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- How to pronounce duplicate (audio)
duplicated; duplicating
: to make a duplicate of
duplicative adjective

duplicate

2 of 2 noun
du·​pli·​cate ˈdü-pli-kət, ˈdyü- How to pronounce duplicate (audio)
: 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

More from Merriam-Webster on duplicate

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