Stand up paddle boarding (SUP) is a popular water activity that requires a stand-up paddle board and a paddle to move across the water. Some popular synonyms for stand-up paddle boarding include paddling, SUP-ing, stand-up surfing, and stand-up paddle surfing. It is worth noting that stand-up surfing refers to the act of riding a wave while standing on the board, and is different from regular stand-up paddle boarding which covers a broader range of activities such as touring and racing. Other alternative synonyms for stand-up paddle boarding include board paddling, stand-up boarding, and stand-up canoeing. Regardless of the name, stand-up paddle boarding is a fun, relaxing, and engaging way to enjoy water activities.