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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.

See Examples For:

In the autumn 2025, unidentified drones flew over several Danish airports and the Skrydstrup air base -- where Ukrainian pilots are trained on F-16 fighter jets.

From Barron's Sep. 15, 2026

Senhor José is a middle-aged clerk who works at the Central Registry of Births, Marriages and Deaths in an unidentified city.

From The Wall Street Journal Sep. 11, 2026

Officials said two unidentified people in the aircraft have died.

From Los Angeles Times Sep. 8, 2026

He is also concerned about unregulated nurseries selling unidentified, or diseased plants.

From BBC Sep. 4, 2026

Only six weeks later would his whereabouts become known, and then only by the bare bones: he was at MIT, working on an unidentified “war project.”

From "Big Science" by Michael Hiltzik

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