者
Meaning
- (after a verb or adjective) one who (is) ...
- (after a noun) person involved in ...
- -er
Example sentence
当局者迷。
You can't see the forest behind the trees.
The character 者
者 turns a verb into the one who does it: 读者 the reader, 记者 the reporter, 作者 the author, 志愿者 the volunteer. It is the -er of written Chinese.