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.
Between the three lawsuits those being sued are Stetson Square Condominium Unit Owners Association, Eclipse, Neyer, property owners Hezekiel and Saba Eskender, as well as multiple unidentified individuals or entities responsible for the maintenance and repair of the balcony. Gillian Stawiszynski, Cincinnati Enquirer, 7 Feb. 2026 Aided by the survey, York also pursued his own research questions, including unidentified diffuse interstellar bands and cataloguing the spectra, or brightness at different wavelengths, of quasi-stellar objects to study the three-dimensional distribution of intergalactic gas. Bob Goldsborough, Chicago Tribune, 7 Feb. 2026 There are emails both of Epstein offering to introduce women to unidentified individuals and of people offering to introduce him to young women. Julie K. Brown, Miami Herald, 7 Feb. 2026 The circumstances regarding the crash were not clear as of Saturday, but the pedestrian, who remains unidentified publicly, was seriously injured. Austin Turner, CBS News, 7 Feb. 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 14 Feb. 2026.

More from Merriam-Webster on unidentified

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster