Mid-riff is a term used to describe the region between the chest and the waist. It is commonly referred to as the abdominal or stomach area. However, there are several synonyms that can be used to describe this area of the body. One such synonym is the midsection. Other synonyms include the waistline, belly, tummy, gut, core, and midriff. These synonyms can be used interchangeably depending on the context in which they are used. It is important to note that while these terms may have different connotations or implications, they all refer to the same region of the body.