The crossword solution for the term 'Fuss Over Appearances' is 'PREEN'. Preening is a behavior in which an animal cleans and arranges its feathers, fur, or other parts of its body. It is often seen in birds, but can also be observed in some mammals, such as cats and dogs. Preening is thought to be a way of maintaining hygiene and improving appearance. In humans, it is often associated with vanity and excessive attention to one's physical appearance.