Well, if you aren't hungry because you have already eaten, then the words for that can include full, satisfied, satiated. But, as for just the state of being without an apetite, I don't know of one (and I am a native speaker). I generally would say "I don't have an apetite." Maybe, "I have lost my apetite," or depending on the reason for this, you might say you are "nauseated," or that kind of thi
AlpheccaStars, It may be true that "anorexia" is in fact the medical term for "lack of appetite," but I would certainly caution against using it that way in general because it is much more broadly used to mean "anorexia nervosa." Anorexia nervosa is a psychological disorder -- very, very different from simple lack of appetite (such as might be caused by illness, side effect of certain medication