形容词

1. 不知其名的;无名的
You describe people or things as nameless when you do not know their name or when they do not have a name.

2. 不宜说出名字（或名称）的
If you say that someone or something will remain nameless, you mean that you will not mention their name, often because you do not want to embarrass them.

1. being or having an unknown or unnamed source

e.g. a poem by an unknown author
corporations responsible to nameless owners
an unnamed donor

Synonym: unidentifiedunknownunnamed