unidentified
adjective
[ ʌnʌɪˈdɛntɪfʌɪd ]
• not recognized or identified.
• "a picture of an unidentified motorcyclist"
Similar:
unknown,
unnamed,
anonymous,
incognito,
nameless,
obscure,
unfamiliar,
strange,
mysterious,
unspecified,
unmarked,
undesignated,
unclassified,
innominate,
Opposite:
identified,
known,