Making some lifelong pledge to not use any of those words seems to be gross overkill.
You can't even say something like: "I'm full because I ate the entire sandwich."
You can't even say something like: "I'm full because I ate the entire sandwich."
In any case the meaning of "full" in "I'm full" is colloquial and not absolutist. It's more like "I'm satisfied" and not "I'm stuffed" (which also isn't used literally).