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Definitions

duplication

[doo-pli-key-shuhn, dyoo-] / ˌdu plɪˈkeɪ ʃən, ˌdyu- /
NOUN
counterfeiting
Synonyms
WEAK
reproduction simulation
NOUN
ditto
Synonyms
STRONG
clone copy double duplicate facsimile reproduction
Antonyms
STRONG
original
NOUN
duplicate
Synonyms
STRONGEST
carbon copy photocopy replica replication
STRONG
Photostat Xerox analogue carbon clone companion coordinate copycat correlate counterfeit counterpart ditto double dupe facsimile fake fellow germination imitation knockoff likeness match mate obverse parallel phony pirate reciprocal recurrence repetition ringer second similarity twin
WEAK
chip off the old block counterscript dead ringer lookalike repro spitting image stat
Antonyms
STRONG
difference dissimilarity enemy opposite original reality reverse unlikeness
WEAK
archetype model prototype
NOUN
imitation
Synonyms
STRONGEST
clone impersonation impression mimicry parody reflection replica reproduction
STRONG
Xerox apery copy counterfeit counterpart ditto dupe duplicate ersatz fake forgery image likeness match mime mimesis mockery parallel phony picture resemblance ringer semblance sham simulacrum takeoff transcription travesty
WEAK
aping carbon copy counterfeiting echoing matching mirroring paralleling paraphrasing parroting patterning representing
Antonyms
STRONGEST
original
STRONG
difference opposite reality seriousness solemnity
WEAK
reverse
NOUN
parallel
Synonyms
STRONGEST
analogy comparison corollary resemblance similarity
STRONG
analogue correlate correspondence correspondent counterpart double duplicate equal equivalent kin likeness match parallelism twin
WEAK
countertype homologue
Antonyms
STRONGEST
difference dissimilarity unlikeness
WEAK
divergence opposite reverse
NOUN
simulation
Synonyms
STRONGEST
reproduction
STRONG
clone copy counterfeit duplicate facsimile fake image likeness match reflection replica sham
WEAK
carbon copy mirroring paralleling
Antonyms
STRONG
difference original reality

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

How can European nations better coordinate military spending to avoid duplication?

From The Wall Street Journal • Feb. 18, 2026

Their widespread presence suggests that the original gene duplication occurred before the last universal common ancestor emerged.

From Science Daily • Feb. 10, 2026

The plan to reduce the number of forces is driven by a desire to reduce duplication, and to reduce the huge disparities in performance between forces.

From BBC • Jan. 26, 2026

"We're cutting red tape, eliminating duplication and prioritising hard."

From Barron's • Dec. 29, 2025

One, known only as Klinefelter’s syndrome, involves a duplication of one of the sex chromosomes.

From "Silent Spring" by Rachel Carson

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.