small fry; unimportant people; nobodies
Derogatory term for people considered insignificant or worthless, likening them to rats. Often used in a dismissive or contemptuous way.
I don't have time to bother with such small fry.
He's a nasty boss who treats his subordinates like nobodies.
Compound of 鼠 (rat, mouse) and 輩 (fellow, group). The term uses the image of rats to disparage people as insignificant or contemptible.