Identified
Identified adjective - Having the identity known or established.
Unknown is an antonym for identified.
Unknown
Both words in one sentence
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It's unknown exactly how many American submarine losses were attributable to these malfunctions before they were identified and corrected.
Source: Film / Operation Petticoat - The origin of the monsters in They is left unknown, though they're heavily identified with the boogeyman.
Source: Dueling Works / Film Horror -
Jandek is a particularly unusual case: While the man himself has almost certainly been identified, his musical collaborators prior to his live debut in 2004 remain unknown.
Source: Un-Person
Cite this Source
Unknown and Identified. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/identified/unknown
Identified & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/identified/unknown>.
Unknown or Identified. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/identified/unknown.
Google Ngram Viewer shows how "identified" and "unknown" have occurred on timeline