noun
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.
あんな鼠輩どもに構っている暇はない。
I don't have time to bother with such small fry.
彼は部下を鼠輩扱いする嫌な上司だ。
He's a nasty boss who treats his subordinates like nobodies.