Remember that the word “fat” is not, by definition, synonymous with worthlessness, laziness, weakness, or lack of intelligence. As an adjective it simply means “having excess flesh.” If you can get to a place where the word doesn’t feel so loaded, that’s good. It will make you less afraid of it, and help you realize that you can simultaneously be fat and smart, driven, beautiful, energetic, confident, and unique.
If you can’t unload the word “fat,” that’s OK too. I’m 27, and if someone called me fat today, I would probably cry. But then I’d think about the kind of small-minded person who is threatened by a woman taking up a few extra inches of space in the world, and another one-syllable adjective would come to mind: sad.