to have nothing on somebody
01
***to have no advantage over (someone) : to not be better than (someone)
例
She ’s got nothing on you when it comes to writing.
02
***to have no decisive incriminating evidence against someone; to have no proof of wrongdoing or criminality about someone
例
You call that mercy? They had nothing on you, otherwise you would n't be here right now.
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!
