Robust is an adjective that describes something or someone as strong, healthy, and vigorous. It can be used to describe a person, animal, object, or system that is strong and unlikely to break or fail. For example, a robust economy is one that is strong and growing, while a robust shelter is one that is sturdy and can withstand harsh weather conditions. Robust can also describe food or drink that has a rich, full-bodied flavor. In summary, robust is a term used to describe something that is strong, healthy, and vigorous, and is often used to describe physical or economic strength.