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Synonyms

identical twin

American  

noun

  1. one of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usually resemble each other closely.


Etymology

Origin of identical twin

First recorded in 1885–90


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.

See Examples For:

I started raising monarch butterflies because my identical twin sister, who played my twin on the show, planted a butterfly garden.

From Los Angeles Times ● Jul. 10, 2026

A woman given six months to live after her leukaemia returned says the thought of leaving her identical twin sister alone is "unthinkable".

From BBC ● Jun. 9, 2026

Elliott meets, and is attracted to, Joey’s identical twin brother, the gay Jack, a successful businessman who explains that Joey has suffered serious psychological problems.

From The Wall Street Journal ● Feb. 13, 2026

The fans wanted more this year - perhaps it is time for Yates' less decorated, identical twin brother Adam to provide it.

From BBC ● Jan. 7, 2026

“Does Mom have an identical twin she never told us about?”

From "The Strangers" by Margaret Peterson Haddix

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