Firstly thank you for you reply, and for your perception maybe is true in one side : the opposite of a small thing is a big thing.
But, as we know, the black hole is the place where matter and energy can be lost from the universe, and the white hole is a place where matter emerges into the universe, where it is very much like the Infinite at the Big Bang, but if we consider that " The opposite of a black hole is the universe itself" We find a kind of contradiction where we observe in the universe the lost and the emerge of matter and energy.