Chundering is a term used to describe the act of vomiting or spewing. While this word may be commonly used, there are many other synonyms that can be used to describe the same act. Some popular synonyms for chundering include throwing up, puking, barfing, upchucking, regurgitating, retching, and expelling stomach contents. Each of these words can be used to describe the same act, but they may differ in their level of formality or intensity. While chundering may be best used in a casual setting, throwing up or vomiting may be better suited for more formal situations. Regardless of the word used, the act of chundering is never pleasant.