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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:

The US said "unidentified remains" had been found, with verification of the remains ongoing.

From BBC Jul. 20, 2026

Minutes later, officials radioed that a caller who reached 911—an unidentified woman who said she wasn’t in the home and was driving from Baltimore to the address—had told dispatchers his front door was unlocked.

From The Wall Street Journal Jul. 12, 2026

It reported a separate attack by an unidentified projectile on a tanker Monday.

From MarketWatch Jul. 7, 2026

Deaths from Venezuela's devastating twin earthquakes rose to at least 3,342 on Sunday as officials began to bury dozens of bodies left unidentified 11 days after the disaster.

From Barron's Jul. 5, 2026

Somewhere in the jungle, an unidentified bird trilled, cawed, and fell silent.

From "Beauty Queens" by Libba Bray

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