The term "old saw" is often used to refer to a cliche or a proverb that has been excessively repeated. It can also refer to a traditional saying that has lost its original meaning or usefulness. Some synonyms for this term include "chestnut," "truism," "hackneyed phrase," "stale adage," "well-worn cliche," and "overused maxim." These terms all convey the idea of something that is familiar or common, but not particularly insightful or relevant. While some old saws may still have value or relevance in certain contexts, others are simply outdated or no longer meaningful. It's important to recognize when these tired expressions are no longer serving a useful purpose in communication.