unidentified

adjective

un·​iden·​ti·​fied ˌən-ī-ˈden-tə-ˌfīd How to pronounce unidentified (audio)
-ə-ˈden-
: 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.
Norway, Denmark and Germany have also reported incidents involving unidentified drones in their airspace in last week, causing disruption to airports and air traffic. Holly Ellyatt, CNBC, 1 Oct. 2025 An unidentified person on the sideline picked the ball up and tossed it back to Biles, who celebrated with a Eurostep toward the stands and tossed the ball to his family. David Ubben, New York Times, 29 Sep. 2025 The composition is formal and stiff, notable mainly for the presence of the unidentified girl. Literary Hub, 29 Sep. 2025 Trump first began suggesting Wray should be be investigated by the Justice Department after the conservative outlet The Blaze, citing an unidentified congressional source, reported last week that 274 FBI agents had been embedded in the pro-Trump mob that stormed the Capitol. Alexander Mallin, ABC News, 29 Sep. 2025 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 8 Oct. 2025.

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