Save-all is a word that refers to many things. It refers to a receptacle that catches anything that has been spilled or a device used to collect drips or spills. It can also be used as an adjective to describe someone who is thrifty or frugal. In terms of synonyms, there are many expressions that we can use to describe the same thing. For instance, spill catcher, leak collector, or waste container. Additionally, thrifty, frugal, economical, and parsimonious terms can be used to describe someone who always saves, uses wisely, and avoids waste. Whatever your choice of words may be, they all refer to the same idea of preserving resources and avoiding unnecessary expenses.