The term 'overly overweight' can be summarized by the crossword solution 'OBESE', which is a 5-letter word. OBESE is a medical term used to describe someone who is significantly overweight, having an excessive amount of body fat. It is usually defined as having a body mass index (BMI) of 30 or higher. People who are OBESE are at an increased risk for a variety of health problems, including heart disease, stroke, and diabetes.