Nillionaire = A person who does not have money of their own, but has money because of another person. He looks rich but its all borrowed and his bank account is nil, hes a nillionaire. Everythings in his wifes name, hes just a nillionaire. Nillionaire is a blending of nil and millionaire. Nil = nothing Millionaire = implies great wealth #Slang @aplusacademyielts 1.0K views14:35