to have nothing on somebody
01
*to have no advantage over (someone) : to not be better than (someone)
例
She is very talented but has nothing on her brother who is an even better singer.
02
*to have no decisive incriminating evidence against someone; to have no proof of wrongdoing or criminality about someone
例
The police can insinuate all they want, but they know they have nothing on me.
03
*to have no information available about someone or something
例
I got this history book for my report, but it has nothing on the topic I want to write about!
