The crossword solution for the term 'ONE OF A MATCHED SET' is 'HERS', which is a four-letter word. This term is used to describe something that belongs to a woman, or is associated with her. It is usually used in the context of a pair of items, such as a pair of shoes, where one belongs to her and the other belongs to someone else. In this case, 'hers' would refer to the item belonging to the woman.