UNIDENTIFIED Synonyms: 48 Similar and Opposite Words

unidentified

adjective

ˌən-ī-ˈden-tə-ˌfīd

Definition of unidentified

as in one

known but not named an unidentified worker reported the security breach

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in unnamed

not named or identified by a name some unidentified person helped them and then left quietly

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

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.

Recent Examples of unidentified The unidentified suspect fled on a scooter as the officers attempted to apprehend him, police said. — Carlos E. Castañeda, CBS News, 12 Oct. 2026 Two months later, Argumedo tried to collect a debt from an unidentified Pomona man, according to the complaint. — Matthew Ormseth, Los Angeles Times, 9 Oct. 2026 The unidentified man reportedly drove into traffic before being hit. — Shambhavi Rimal, Fort Worth Star-Telegram, 6 Oct. 2026 Burke, who was reconstructing fossil gharials for his doctoral project, noted the subtle differences between the unidentified species and the false gharial, and started to work on an up-to-date description in December 2023. — Taylor Nicioli, CNN Money, 6 Oct. 2026 See All Example Sentences for unidentified

Recent Examples of Synonyms for unidentified

Adjective

Drinkwater didn't make one appearance in a Chelsea shirt last season, whilst Bakayoko spent the season in Italy on loan at AC Milan.

— SI.com, SI.com, 3 Aug. 2019
Decisions made by engineers today, in other words, will determine not how one car drives but how all cars drive.

— Johannes Himmelreich, BostonGlobe.com, 30 Mar. 2018

Definition of one

Adjective

Bend Police Chief Mike Krantz praised the rapid response of both citizens and staff, while highlighting an unnamed teacher who confronted the gunman directly by throwing a cellphone and tackling him.

— Louis Casiano, FOXNews.com, 18 Oct. 2026
Queries were also submitted to an unnamed AI chatbot account associated with Alfozan’s wife, requesting information on how to capture audio, use passive scanning in live listening and encrypt an SD card, among other prompts, the complaint said.

— Suhauna Hussain, Los Angeles Times, 17 Oct. 2026

Definition of unnamed

Adjective

Last month, citing anonymous sources, Reuters reported that Solidigm was considering an initial public offering and had held pitch meetings with investment banks.

— Sacbee.com, Sacbee.com, 17 Oct. 2026
Boucher said the California couple designated her as their spokesperson and wished to remain anonymous.

— Andrew J. Campa, Los Angeles Times, 17 Oct. 2026

Definition of anonymous

Browse Nearby Words

unhysterical

unidentified

unidiomatic

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Style

“Unidentified.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unidentified. Accessed 20 Oct. 2026.

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Synonyms of unidentified

adjective

Example Sentences

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