unidentified

adjective

un·​iden·​ti·​fied ˌən-ī-ˈden-tə-ˌfīd How to pronounce unidentified (audio)
-ə-ˈden-
Synonyms of unidentifiednext
: not having a known or established identity : not identified
unidentified flying objects
an unidentified suspect

Examples of unidentified in a Sentence

an unidentified worker reported the security breach some unidentified person helped them and then left quietly
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The driver, an unidentified male, was alone in the silver sedan. Josh Taylor, CBS News, 2 July 2026 The company’s lax security allowed the unidentified Chinese developer to continue accessing all customer personal information even after leaving the company, South Korean officials said. ABC News, 2 July 2026 The passenger, who remains unidentified by authorities, was denied entry and escorted out of the checkpoint. Kathleen Wong, USA Today, 2 July 2026 The unidentified player was the only one statewide to pick the five Powerball game numbers, which were 2, 6, 26, 39 and 68. Harry Harris, Mercury News, 2 July 2026 See All Example Sentences for unidentified

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of unidentified was in 1861

Cite this Entry

“Unidentified.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unidentified. Accessed 5 Jul. 2026.

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