This is the 13673rd most frequent Russian word.
неназванных
"Unnamed" or "unspecified."
The word 'неназванных' describes sources that have not been named, functioning as an adjective.
Сообщения поступили от неназванных источников.
The messages came from unnamed sources.
The word 'неназванным' is used here to describe people who are not mentioned by name, serving as a descriptive word.
Он оставил свою помощь неназванным людям.
He left his help to unnamed people.
In this sentence, 'неназванных' refers to participants whose names are not specified, acting as an attribute to 'участников'.