unidentifiedun‧i‧den‧ti‧fied /ˌʌnaɪˈdentɪfaɪd◂/ adjective 
Examples
An unidentified man was spotted near the scene of the crime.
ExamplesEXAMPLES FROM OTHER DICTIONARIES
Thesaurus- A large unidentified object was spotted floating in the sea near our ship.
- An unidentified caller contacted the police and gave the names of the men involved in the robbery.
- Five men were wounded by an unidentified gunman in Belfast city centre yesterday.
- The body remained unidentified until the police checked dental records.
- The three bodies found in the river remain unidentified.
- Three of the victims remain unidentified.
- Two unidentified gunmen opened fire on the Consulate van.
- It is clear that the unidentified factor in this example is climate.
- Most of these were between the age of 15 and 30, and the majority who died were unidentified.
- On July 31, for instance, unidentified fighters attacked a police station in Bendery, killing two people.
- Unix International worked with both Unix Labs and Sun on the guide, along with a third, unidentified company.
Longman Language Activatorsomething that people know nothing or very little about► unknown
Collocations · After they left Kathmandu they would be travelling through unknown territory.· There are still a great many unknown insect species in the world.· Yesterday the village was quite unknown, but today it's on the front page of all the newspapers.
► the unknown a place or an experience that people have not been in before and that they are therefore often nervous about: · In 1492 Columbus and his group of tiny ships set off into the unknown.· Starting a new relationship with someone is always a journey into the unknown.fear of the unknown: · The fear of the unknown prevents many people from making significant changes in their lives.
► uncharted relating to places that have not been put on a map yet, or to situations that have not yet been experienced: · Space is filled with unknown stars and uncharted galaxies.uncharted territory: · When Indian politicians established mass democracy in 1947, they knew they were entering uncharted territory.
► unidentified if something is unidentified , people do not know what it is, what its name is, or who it belongs to - used especially in newspapers or in official reports: · A large unidentified object was spotted floating in the sea near our ship.· Two unidentified gunmen opened fire on the Consulate van.· The body remained unidentified until the police checked dental records.
► little known a little known place or thing is one that not many people know about: · He was born on a little known island off the south coast of Spain.· The kakapo is a little known species of parrot that lives in New Zealand.
someone whose name is not known► anonymous someone who is anonymous does something without saying what their name is, or their name is not known: · The writer of the poem is anonymous.an anonymous donor (=someone who gives something but does not say publicly who they are): · $50,000 has been given to the charity by an anonymous donor from Utah.anonymous letter/phone call (=from someone who does not say their name): · I received anonymous phone calls warning me not to go to the police about what I'd seen.somebody wishes to remain anonymous: · One source, who wished to remain anonymous, said that he had seen the woman go into his room.
► unnamed an unnamed person is someone whose name has not been made known publicly: · An unnamed bidder paid $23 million for the painting.· The newspaper received the information from an unnamed source.
► unidentified an unidentified person is someone whose name is not known because police or government officials have been unable to find out who they are, or have not said who they are: · Five men were wounded by an unidentified gunman in Belfast city centre yesterday.· The three bodies found in the river remain unidentified.· An unidentified caller contacted the police and gave the names of the men involved in the robbery.
► incognito if a famous person goes somewhere incognito , they go there without telling people who they are: · He tried to go incognito but his bizarre disguise made him stand out even more.
► unknown an unknown person is someone whose name is not known because you do not know them or because they are not famous: · She said the flowers were from an unknown admirer.· We met near the Tomb of the Unknown Soldier.unknown to: · Most of the stars in the movie are unknown to US audiences.
► nameless a nameless person is one of many people who are not famous and whose names are not generally known: · No one gives much thought to the nameless millions who work in our factories.· the nameless victims of the nation's civil war
COLLOCATIONS FROM THE CORPUSNOUN► gunman
Word family· The unidentified gunmen have demanded a £1.2m ransom, he said.
► man· Sunday's papers, including the Sunday Herald, reported that an unidentified man was still being questioned in connection with Puddephat's murder.
WORD FAMILYnounidentificationidentityadjectiveidentifiableunidentifiedverbidentify
an unidentified person or thing is one that you do not know the name of: An unidentified man was spotted near the scene of the crime.