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Showing results for unidentified. Search instead for unique identifiers.
Synonyms

unidentified

British  
/ ˌʌnaɪˈdɛntɪˌfaɪd /

adjective

  1. not identified or recognized

    an unidentified man

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Explanation

If something is unidentified, it's mysterious or unknown, whether it's an unidentified flying object or an unidentified fruit that turns up in your grocery cart. Being unidentified means having an unknown identity, from a Latin root meaning "sameness." If you can't determine the identity of a person, like the victim of a crime or a new student at school, they're unidentified. And if your dog brings something disgusting inside, but you can't figure out what on earth it is, just call it an unidentified object and toss it in the garbage!

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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.

"The identity of the unidentified male remains outstanding. I hope that identification will be forthcoming," Wilcox added.

From BBC • Jun. 11, 2026

Last month’s infodump of an Armed Forces report listing 209 sightings of unidentified objects was announced with a presidential tweet that “the people can decide for themselves.”

From Los Angeles Times • Jun. 10, 2026

Two unidentified sportsbooks were named as victims of the alleged conspiracy in the original indictment, and the superseding indictment names the NBA and the Hornets as additional victims.

From Los Angeles Times • May 29, 2026

The unidentified person, who was working in the Democratic Republic of Congo, will be flown to Germany for treatment.

From The Wall Street Journal • May 19, 2026

He pointed to a picture of the actress walking down a California beach with an unidentified friend who held the baby against her chest.

From "Me Talk Pretty One Day" by David Sedaris

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