Potbelly is a term used to describe a protruding abdomen or stomach. But there are many other words that can be used as synonyms for this term. Some of these words are belly, paunch, gut, tummy, beer gut, spare tire, and middle-age spread. These words are all used to describe a similar condition where the abdomen protrudes more than usual. They may be used interchangeably, but some words may imply more negative connotations than others. Regardless of the synonym used, it is important to remember that a potbelly or protruding abdomen can have serious health implications and should be addressed through proper diet and exercise.