A slop jar is a container for waste or unwanted liquids, typically located in a kitchen or other food preparation area. It is a term that is somewhat archaic, and may not be commonly used in modern language. However, there are several synonyms that can be used in its place, such as a chamber pot, a bedpan, a urinal, a washbasin, or a potty. These words all describe similar containers for waste or bodily fluids, and are generally more commonly used today than the term slop jar. When selecting a synonym, it's important to consider the context and audience in order to choose the most appropriate term.