Carnivarian
The opposite of a pescatarian/vegetarian. Either someone who eats meat, but not fish; or doesn't eat vegetables.
Person 1: Do you want some salad?
Person 2: Sorry I'm carnivarian.
Person 1: You mean carnivore?
Person 2: No, carnivarian.
Person 1: What's that?
Person 2: The opposite of a vegetarian.