unnamed
adj. B2 Upper Intermediate US //ənˈneɪmd// UK //ʌnnˈeɪmd// un·named
adj. not having a name, or having a name that is not shared with the public. You use this when you want to keep someone's identity a secret.
adj. lacking a specific name or having an identity that is intentionally withheld from public record. Often used in journalistic contexts to protect a source or victim.
The story was told by an unnamed witness.
An unnamed official from the ministry leaked the documents to the press late last night.
The donation was made by an unnamed benefactor who insisted that their contribution remain private to avoid any public scrutiny of their personal finances.
From un- + named.
Usage
Typically placed before the noun it modifies.