Here is a little bit of muddiness. If there is no clearly defined end of something, is it permanent, or temporary. I would argue, since nearly everything changes and virtually nothing is permanent in an absolute sense; Permanent can only reasonably mean, no predetermined end time. Hunger has no defined amount of time. It may in fact last until death, making it quite permanent from the point of view of the individual experiencing it. So hunger in fact would, for the purpose of a definition, be permanent.