Unidentified/ˌʌnaɪˈdentɪfaɪd/ Definition 1 of 3Pro Tip 1/3Crime Reports Used in news or crime reporting to describe someone or something that hasn't been identified yet. An unidentified suspect was caught on camera. Pro Tip 2/3Mysterious Context Adds a sense of mystery when used to describe objects or facts not yet understood. Unidentified symbols were found at the ancient site. Pro Tip 3/3Impersonal Tone Conveys an impersonal or distant tone, often used in formal or official statements. The company received feedback from an unidentified source.