I need a synonym for a word can you help?

ok so theres this girl that i really really hate and shes in my cl and she called me a ***** and i need a really good word, something that she won't know what means to make any come back she has seem like nothing cuz this isn't the first time that this has happend and i just want to be better than to call her like a hoe, slut, skank,ect. so just a really good word and a definition please. thank you!!!