Eupepsia is a medical term that refers to good digestion or a well-functioning digestive system. The antonyms of the word eupepsia are dyspepsia and indigestion. Dyspepsia is a medical condition characterized by discomfort or pain in the upper abdomen, which is often accompanied by bloating, nausea, and belching. Indigestion, on the other hand, refers to any discomfort, pain, or burning sensation in the digestive tract that occurs after eating. Other antonyms for eupepsia include malabsorption, constipation, and diarrhea, which are all disruptions to the normal gastrointestinal process. Maintaining a healthy diet and lifestyle can help ensure one's digestive system's functionality does not get disrupted, leading to the antonyms of eupepsia.